CN115684327B - Method and system for testing gas components in atomic gas chamber - Google Patents
Method and system for testing gas components in atomic gas chamber Download PDFInfo
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- CN115684327B CN115684327B CN202211386443.XA CN202211386443A CN115684327B CN 115684327 B CN115684327 B CN 115684327B CN 202211386443 A CN202211386443 A CN 202211386443A CN 115684327 B CN115684327 B CN 115684327B
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 50
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 235
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 233
- 239000011521 glass Substances 0.000 claims abstract description 59
- 239000003708 ampul Substances 0.000 claims abstract description 44
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 238000001819 mass spectrum Methods 0.000 claims abstract description 39
- 238000005245 sintering Methods 0.000 claims abstract description 29
- 238000010009 beating Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 484
- 238000010438 heat treatment Methods 0.000 claims description 31
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 15
- 229920006395 saturated elastomer Polymers 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 230000003595 spectral effect Effects 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 claims 1
- 239000000306 component Substances 0.000 description 75
- 238000005481 NMR spectroscopy Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004949 mass spectrometry Methods 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 229910052701 rubidium Inorganic materials 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
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Abstract
The invention provides a method and a system for testing gas components in an atomic gas chamber, wherein the method comprises the following steps: designing a double-exhaust-pipe air chamber, wherein the double-exhaust-pipe air chamber comprises a first air pipe, a second air pipe, an atomic air chamber and an ampoule bottle; vacuumizing a glass pipeline and a vacuum pipeline, and detecting the leak rate of the atomic air chamber; the alkali metal realizes directional transfer along the glass pipeline; filling the double exhaust pipe air chamber with air; sintering the double exhaust pipe air chamber to be placed on a table; the other end of the bottle body is connected to a vacuum pipeline of a mass spectrum system, and a striking device is placed; vacuumizing the other end of the ampoule bottle and the vacuum pipeline; and (3) beating and crushing the sintering head by using a beating device, and analyzing the gas components and the gas proportion in the atomic gas chamber by using a mass spectrum system to finish the test of the gas components in the atomic gas chamber. By applying the technical scheme of the invention, the technical problem that the composition and proportion of the gas in the atomic gas chamber after the background cannot be accurately estimated in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of atomic sensing, in particular to a method and a system for testing gas components in an atomic gas chamber.
Background
The atomic air chamber and the internal atoms in the nuclear magnetic resonance gyro form a sensitive gauge outfit of the nuclear magnetic resonance gyro, and the nuclear magnetic resonance gyro is one of core components of the nuclear magnetic resonance gyro. An atomic gas chamber is a field of atomic spin manipulation, and the object of the manipulation is a multicomponent atom filled inside the gas chamber. The types and the quantity of atoms filled in the air chamber are important parameters of the magnetic resonance air chamber, so that the types selection and the proportion of the atomic sources are optimized, and the performance of the atomic air chamber can be improved. At present, the components of the gas in the gas chamber are not precisely controlled, only a pressure gauge is used for characterization, and the components in the gas chamber after the gas chamber is placed in the background cannot be directly tested. In the process of placing the atomic gas chamber in the table, the gas composition in the atomic gas chamber is affected in the sintering process, and the composition and proportion of the gas composition in the atomic gas chamber cannot be accurately estimated.
Disclosure of Invention
The invention provides a method and a system for testing gas components in an atomic gas chamber, which can solve the technical problem that the composition and the proportion of the gas components in the atomic gas chamber after the next stage cannot be accurately evaluated in the prior art.
According to an aspect of the present invention, there is provided a method for testing a gas composition in an atomic gas chamber, the method comprising: designing a double-exhaust-pipe air chamber, wherein the double-exhaust-pipe air chamber comprises a first air pipe, a second air pipe, an atomic air chamber and an ampoule bottle, the first air pipe is arranged at one end of the atomic air chamber, the second air pipe is arranged at the other end of the atomic air chamber, the ampoule bottle comprises a bottle body and a sintering head, the sintering head is arranged in the bottle body, one end of the bottle body is connected with the atomic air chamber through the second air pipe, and the other end of the bottle body is an open end; connecting a first air pipe of the atomic air chamber with a glass pipeline, and connecting the glass pipeline with a vacuum pipeline; vacuumizing the glass pipeline and the vacuum pipeline, detecting the leakage rate of the atomic air chamber, and replacing the double-exhaust-pipe air chamber when the leakage rate of the atomic air chamber exceeds the set leakage rate threshold range until the atomic air chamber leakage rate of the double-exhaust-pipe air chamber is within the set leakage rate threshold range; a heating component and a refrigerating component are arranged on the glass pipeline, the heating component is positioned at one side close to an alkali metal source in the glass pipeline, and the heating component and the refrigerating component are used for forming a temperature gradient on the glass pipeline; the heating component and the refrigerating component move along the glass pipeline to realize directional transfer of alkali metal along the glass pipeline, and after a set time, the alkali metal is completely transferred into the atomic gas chamber; filling a plurality of gases in an atomic gas chamber of a double-exhaust gas chamber through a first gas pipe, detecting the pressure of each gas in the atomic gas chamber, and adjusting the partial pressure of any gas when the partial pressure of any gas is not in a set gas partial pressure threshold range until the partial pressure of each gas in the atomic gas chamber is in the set gas partial pressure threshold range; testing the gas components and the proportions of the gases in the atomic gas chamber by using a mass spectrometer, and completing the filling of the gas in the double-exhaust-pipe gas chamber when the gas components and the proportions of the gases in the atomic gas chamber are all in a set gas proportion threshold range; sintering the double exhaust pipe air chamber to be placed on a table; the other end of the ampoule bottle body with the double exhaust gas chambers is connected with a vacuum pipeline of a mass spectrum system, and a striking device is placed in the vacuum pipeline of the mass spectrum system; vacuumizing the other end of the ampoule bottle and a vacuum pipeline by using a mass spectrum system, closing the vacuumizing function of the mass spectrum system after the set vacuum degree is reached, and starting the mass spectrum analysis function of the mass spectrum system; the sintering head is beaten and broken by utilizing a beating device so that the vacuum pipeline is communicated with the atomic gas chamber, and the gas components and the gas proportion in the atomic gas chamber are analyzed by utilizing a mass spectrum system so as to finish the test of the gas components in the atomic gas chamber.
Further, the filling of the plurality of gases of the atomic gas chamber into the atomic gas chamber of the double-exhaust gas chamber specifically includes: opening a first air source, wherein first air in the first air source enters an atomic air chamber, detecting the pressure of the first air in the first air source, and closing the first air source when the pressure of the first air in the first air source reaches a set pressure of the first air; opening a second gas source, wherein the second gas in the second gas source enters an atomic gas chamber, detecting the second gas pressure in the second gas source, and closing the second gas source when the second gas pressure in the second gas source reaches the set second gas pressure; and repeating the above processes to sequentially finish the filling of a plurality of gases.
Further, when the partial pressure of any one gas is not within the set gas partial pressure threshold range, adjusting the partial pressure of any one gas until the partial pressures of the gases in the atomic gas chamber are within the set gas partial pressure threshold range specifically includes: when the partial pressure of any gas is smaller than the set partial pressure threshold range of any gas, opening a gas source of any gas, and supplementing any gas in the atomic gas chamber until the partial pressure of any gas is within the set partial pressure threshold range of any gas; when the partial pressure of any gas is larger than the set range of the partial pressure threshold of any gas, the mixed gas in the atomic gas chamber is pumped out by a set volume, and the pressure of the mixed gas in the atomic gas chamber body is detected again until the partial pressure of any gas is within the set range of the partial pressure threshold of any gas.
Further, the diameter of the first air pipe and the diameter of the second air pipe are both 2.5mm to 3.5mm, and the diameter of the ampoule bottle is 8.5mm to 9.5mm.
Further, the alkali metal in the atomic gas chamber comprises a first alkali metal and a second alkali metal, and the testing method of the gas composition in the atomic gas chamber further comprises the following steps before the heating component and the refrigerating component move along the glass pipeline to realize directional transfer of the alkali metal along the glass pipeline: confirming the mass ratio of the two alkali metals to be charged according to the set density ratio of the first alkali metal to the second alkali metal; after the heating assembly and the cooling assembly move along the glass tube to achieve directional transfer of the alkali metal along the glass tube, the testing method of the gas component in the atomic gas chamber further comprises the following steps: constructing a light intensity detection loop to detect light intensity data transmitted by the light of the laser light source through the atomic air chamber, calculating and acquiring the density of the first alkali metal and the density of the second alkali metal based on the light intensity data transmitted by the light of the laser light source through the atomic air chamber and the initial light intensity of the laser emitted by the laser light source, and calculating and acquiring the density ratio of the first alkali metal and the second alkali metal according to the density of the first alkali metal and the density of the second alkali metal; when the density ratio of the first alkali metal to the second alkali metal exceeds the set density ratio threshold range, continuing to charge the second alkali metal into the atomic gas chamber, and repeating the process until the density ratio of the first alkali metal to the second alkali metal is in the set density ratio threshold range; and when the density ratio of the first alkali metal to the second alkali metal is smaller than the set density ratio threshold range, continuously filling the first alkali metal into the atomic gas chamber, and repeating the process until the density ratio of the first alkali metal to the second alkali metal is in the set density ratio threshold range.
Further, constructing a light intensity detection loop to detect light intensity data transmitted by the light of the laser light source through the atomic gas chamber, and calculating and obtaining the density of the first alkali metal and the density of the second alkali metal based on the light intensity data transmitted by the light of the laser light source through the atomic gas chamber and the initial light intensity of the laser emitted by the laser light source specifically includes: the method comprises the steps that laser emitted by a laser light source sequentially passes through a gram Taylor and a 1/2 wave plate and then enters a polarization beam splitting prism to be split into first laser and second laser, the first laser passes through an atomic air chamber and then enters a first photoelectric detector, the first photoelectric detector collects and acquires the light intensity of the laser transmitted from the atomic air chamber, the second laser passes through a right-angle prism and then enters a second photoelectric detector, and the second photoelectric detector acquires the initial light intensity of the laser emitted by the laser light source; the density of the first alkali metal and the density of the second alkali metal are calculated and obtained based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light source.
Further, the calculation of obtaining the density of the first alkali metal and the density of the second alkali metal based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light source specifically includes: calculating and obtaining the density of the first alkali metal and the density of the second alkali metal based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light sourceCalculating a first parameter A1 and a third parameter gamma 1 for obtaining the first alkali metal, wherein P T(ν1) is the light intensity of the first alkali metal laser transmitted from the atomic gas chamber, P 0(ν1) is the initial light intensity of the first alkali metal laser emitted by the laser light source, v 01 is the absorption frequency of the absorption point of the first alkali metal, and v 1 is the spectral absorption frequency of the first alkali metal; according to/>Calculating a second parameter A2 and a fourth parameter gamma 2 for obtaining the second alkali metal, wherein P T(ν2) is the light intensity of the second alkali metal laser transmitted from the atomic gas chamber, P 0(ν2) is the initial light intensity of the second alkali metal laser emitted by the laser light source, v 02 is the absorption frequency of the second alkali metal absorption point, v 2 is the spectral absorption frequency of the second alkali metal, and A1, A2, C, gamma 1 and gamma 2 are parameters to be fitted; the density of the first alkali metal is obtained by calculating according to a first parameter A1 and a third parameter Γ1 of the first alkali metal and according to A1= [ 1recfoscdc ] Γ1/2, the density of the second alkali metal is obtained by calculating according to a second parameter A2 and a fourth parameter Γ2 of the second alkali metal and according to A2= [ [ 2recfoscdc ] Γ2/2, wherein r e is the electron radius, c is the speed of light, f osc is a constant, f osc＝0.324,dc is the length of a gas chamber, [ [ 1 ] is the density of the first alkali metal, and [ (2 ] is the density of the second alkali metal.
Further, confirming the mass ratio of the two alkali metals to be charged according to the set density ratio of the first alkali metal and the second alkali metal specifically includes: acquiring the saturated steam density of the first alkali metal and the saturated steam density of the second alkali metal; calculating to obtain the mass of the first alkali metal according to the set density of the first alkali metal and the saturated steam density of the first alkali metal, and calculating to obtain the mass of the second alkali metal according to the set density of the second alkali metal and the saturated steam density of the second alkali metal; and calculating and obtaining the mass ratio of the two alkali metals according to the mass of the first alkali metal and the mass of the second alkali metal.
According to still another aspect of the present invention, there is provided a system for testing a gas composition in an atomic gas chamber, the system for testing a gas composition in an atomic gas chamber performing a gas composition test using the method for testing a gas composition in an atomic gas chamber as described above.
Further, the system for testing the gas composition in the atomic gas chamber comprises: a vacuum pipeline; the ampoule bottle comprises a bottle body and a sintering head, wherein the sintering head is arranged in the bottle body, one end of the bottle body is connected with the atomic air chamber through the second air pipe, and the other end of the bottle body is an open end; the beating device is used for beating and crushing the sintering head so as to enable the vacuum pipeline to be communicated with the atomic air chamber; and the mass spectrum system is used for vacuumizing the other end of the ampoule bottle and the vacuum pipeline and analyzing the gas components and the gas proportion in the atomic gas chamber.
By means of the technical scheme, the method comprises the steps of designing a double-exhaust-pipe air chamber, reading out the components and proportions of the gas in the air chamber through a pressure gauge and an online mass spectrometer when the double-exhaust-pipe air chamber is manufactured, connecting the atomic air chamber connected with an ampoule bottle to a mass spectrum system after the double-exhaust-pipe air chamber is arranged on a stage, opening the ampoule bottle by using a glass hammer after vacuumizing, and testing the components and proportions of the gas in the air chamber by using the mass spectrum system, wherein the method can accurately evaluate the components and proportions of the gas in the atomic air chamber after the double-exhaust-pipe air chamber is arranged on a stage; in addition, when the double exhaust pipe air chamber is manufactured, the leakage rate of the atomic air chamber is detected, so that the atomic air chamber with unqualified quality, the leakage rate of which exceeds the set leakage rate threshold range, can be removed, and the manufacturing quality of the atomic air chamber is improved; the heating component and the refrigerating component are arranged, and the heating component and the refrigerating component move along the glass pipeline so as to realize the directional transfer of alkali metal along the glass pipeline, so that the directional transfer of the alkali metal can be realized, and the filling efficiency of the alkali metal is improved; by detecting the pressure of each gas in the atomic gas chamber, the pressure composition of each gas in the sample gas is obtained, and the pressure composition of each component of the working gas is calculated according to the partial pressure of the sample. Compared with the prior art, the method for testing the gas components in the atomic gas chamber can realize the testing of the gas components and the proportion in the miniature atomic gas chamber, improve the control performance of the atomic gas chamber, meet the requirements of the high-precision magnetic resonance gyroscope on the performance of the gas chamber, and further improve the precision of the nuclear magnetic resonance gyroscope.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 shows a schematic diagram of a system for testing gas composition in an atomic gas chamber, provided in accordance with an embodiment of the present invention;
FIG. 2 illustrates a schematic diagram of a dual exhaust plenum provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view showing a structure for manufacturing a double exhaust pipe air chamber according to an embodiment of the present invention;
FIG. 4 shows a schematic structural view of an alkali metal directional transfer device provided in accordance with an embodiment of the present invention;
fig. 5 shows a schematic structural diagram of a light intensity detection light path provided according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. A vacuum pipe; 20. a glass tube; 30. a leak detector; 40. a vacuum pump unit; 50. a gas detection device; 60. a gas source; 70. a vacuum gauge; 80. a heating assembly; 90. a refrigeration assembly; 100. a pressure gauge; 110. a heating control unit; 120. a refrigeration control unit; 130. a glass hammer; 140. an alkali metal ampoule; 150. a laser; 160. glan taylor; 170. a 1/2 wave plate; 180. a polarization beam splitter prism; 190. a direct prism; 200. a first photodetector; 210. a second photodetector; 220. a double exhaust pipe air chamber; 221. a first air tube; 222. a second air pipe; 223. an atomic gas chamber; 224. ampoule bottle; 2241. a bottle body; 2242. a sintering head; 230. a mass spectrometry system; 240. a vacuum pipeline; 250. and a striking device.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As shown in fig. 1 to 5, according to an embodiment of the present invention, there is provided a method for testing a gas composition in an atomic gas chamber, the method comprising: designing a double-exhaust-pipe air chamber 220, wherein the double-exhaust-pipe air chamber 220 comprises a first air pipe 221, a second air pipe 222, an atomic air chamber 223 and an ampoule bottle 224, the first air pipe is arranged at one end of the atomic air chamber 223, the second air pipe 222 is arranged at the other end of the atomic air chamber, the ampoule bottle 224 comprises a bottle 2241 and a sintering head 2242, the sintering head 2242 is arranged in the bottle 2241, one end of the bottle 2241 is connected with the atomic air chamber 223 through the second air pipe 222, and the other end of the bottle 2241 is an open end; connecting the first gas pipe 221 of the atomic gas chamber 223 with a glass pipe, and connecting the glass pipe with a vacuum pipe; vacuumizing the glass pipeline and the vacuum pipeline, detecting the leakage rate of the atomic air chamber, and replacing the double-exhaust-pipe air chamber when the leakage rate of the atomic air chamber exceeds the set leakage rate threshold range until the atomic air chamber leakage rate of the double-exhaust-pipe air chamber is within the set leakage rate threshold range; a heating component and a refrigerating component are arranged on the glass pipeline, the heating component is positioned at one side close to an alkali metal source in the glass pipeline, and the heating component and the refrigerating component are used for forming a temperature gradient on the glass pipeline; the heating component and the refrigerating component move along the glass pipeline to realize directional transfer of alkali metal along the glass pipeline, and after a set time, the alkali metal is completely transferred into the atomic gas chamber; filling a plurality of gases in an atomic gas chamber of a double-exhaust gas chamber through a first gas pipe, detecting the pressure of each gas in the atomic gas chamber, and adjusting the partial pressure of any gas when the partial pressure of any gas is not in a set gas partial pressure threshold range until the partial pressure of each gas in the atomic gas chamber is in the set gas partial pressure threshold range; testing the gas components and the proportions of the gases in the atomic gas chamber by using a mass spectrometer, and completing the filling of the gas in the double-exhaust-pipe gas chamber when the gas components and the proportions of the gases in the atomic gas chamber are all in a set gas proportion threshold range; sintering the double exhaust pipe air chamber to be placed on a table; the other end of the ampoule bottle body with the double exhaust gas chambers is connected to a vacuum pipeline of a mass spectrum system, and a striking device 250 is arranged in the vacuum pipeline of the mass spectrum system; vacuumizing the other end of the ampoule bottle and the vacuum pipeline 240 by using the mass spectrum system 230, closing the vacuumizing function of the mass spectrum system after reaching a set vacuum degree, and starting the mass spectrum analysis function of the mass spectrum system; the sintering head is beaten and broken by the beating device 250 so that the vacuum pipeline is communicated with the atomic gas chamber, and the gas components and the gas proportion in the atomic gas chamber are analyzed by the mass spectrum system so as to complete the test of the gas components in the atomic gas chamber.
By means of the configuration mode, the method is characterized in that a double-exhaust-pipe air chamber is designed, when the double-exhaust-pipe air chamber is manufactured, the components and the proportions of the gas in the air chamber are read out through a pressure gauge and an online mass spectrometer, the atomic air chamber connected with an ampoule bottle is connected to a mass spectrum system after the air chamber is placed on the stage, the ampoule bottle is opened by a glass hammer after vacuumizing, and the components and the proportions of the gas in the air chamber are tested by the mass spectrum system; in addition, when the double exhaust pipe air chamber is manufactured, the leakage rate of the atomic air chamber is detected, so that the atomic air chamber with unqualified quality, the leakage rate of which exceeds the set leakage rate threshold range, can be removed, and the manufacturing quality of the atomic air chamber is improved; the heating component and the refrigerating component are arranged, and the heating component and the refrigerating component move along the glass pipeline so as to realize the directional transfer of alkali metal along the glass pipeline, so that the directional transfer of the alkali metal can be realized, and the filling efficiency of the alkali metal is improved; by detecting the pressure of each gas in the atomic gas chamber, the pressure composition of each gas in the sample gas is obtained, and the pressure composition of each component of the working gas is calculated according to the partial pressure of the sample. Compared with the prior art, the method for testing the gas components in the atomic gas chamber can realize the testing of the gas components and the proportion in the miniature atomic gas chamber, improve the control performance of the atomic gas chamber, meet the requirements of the high-precision magnetic resonance gyroscope on the performance of the gas chamber, and further improve the precision of the nuclear magnetic resonance gyroscope.
In order to realize the manufacture of the double-exhaust-pipe air chamber, the double-exhaust-pipe air chamber is connected with a glass pipeline, and the glass pipeline is connected with a vacuum pipeline; and vacuumizing the glass pipeline and the vacuum pipeline, detecting the leakage rate of the double-exhaust-pipe air chamber body, and replacing the double-exhaust-pipe air chamber body when the leakage rate of the double-exhaust-pipe air chamber body exceeds the set leakage rate threshold range until the leakage rate of the double-exhaust-pipe air chamber body is within the set leakage rate threshold range. In the invention, the detection of the leak rate of the double exhaust pipe air chamber body specifically comprises the following steps: the leak detector is connected with the vacuum pipeline, leakage rate detection gas is sprayed to the outside of the double-exhaust-pipe air chamber body, and whether the leakage rate detection gas exists in the vacuum pipeline or not is detected by the leak detector so as to realize leakage rate detection of the double-exhaust-pipe air chamber body.
In addition, in order to reduce the residue of impurity gas in the system and realize the ultrahigh vacuum treatment of the double-exhaust-pipe air chamber, the manufacturing method of the double-exhaust-pipe air chamber further comprises the following steps of: the double exhaust pipe air chamber body is heated to remove impurity gas in the double exhaust pipe air chamber body.
Further, in the present invention, in order to enable precise filling of the atomic composition in the atomic gas chamber, the alkali metal in the atomic gas chamber may include a first alkali metal and a second alkali metal, and before the heating component and the cooling component move along the glass pipe to enable directional transfer of the alkali metal along the glass pipe, the method for testing the gas composition in the atomic gas chamber further includes: confirming the mass ratio of the two alkali metals to be charged according to the set density ratio of the first alkali metal to the second alkali metal; after the heating assembly and the cooling assembly move along the glass tube to achieve directional transfer of the alkali metal along the glass tube, the testing method of the gas component in the atomic gas chamber further comprises the following steps: constructing a light intensity detection loop to detect light intensity data transmitted by the light of the laser light source through the atomic air chamber, calculating and acquiring the density of the first alkali metal and the density of the second alkali metal based on the light intensity data transmitted by the light of the laser light source through the atomic air chamber and the initial light intensity of the laser emitted by the laser light source, and calculating and acquiring the density ratio of the first alkali metal and the second alkali metal according to the density of the first alkali metal and the density of the second alkali metal; when the density ratio of the first alkali metal to the second alkali metal exceeds the set density ratio threshold range, continuing to charge the second alkali metal into the atomic gas chamber, and repeating the process until the density ratio of the first alkali metal to the second alkali metal is in the set density ratio threshold range; and when the density ratio of the first alkali metal to the second alkali metal is smaller than the set density ratio threshold range, continuously filling the first alkali metal into the atomic gas chamber, and repeating the process until the density ratio of the first alkali metal to the second alkali metal is in the set density ratio threshold range.
Under the configuration mode, the filling amount of the double alkali metal atoms is accurately measured by utilizing a spectrum analysis method, the operation is simple, the implementation is easy, the precision is high, the precise filling of the atomic components in the atomic gas chamber can be realized, the performance of the atomic gas chamber is improved, and the precision of the gyroscope is further improved.
Specifically, in the present invention, in order to achieve precise filling of the atomic composition in the atomic gas chamber of the double exhaust gas chamber, it is first necessary to confirm the mass ratio of the two alkali metals to be filled according to the set density ratio of the first alkali metal and the second alkali metal. In the present invention, confirming the mass ratio of the two alkali metals to be charged according to the set density ratio of the first alkali metal and the second alkali metal specifically includes: acquiring the saturated steam density of the first alkali metal and the saturated steam density of the second alkali metal; calculating to obtain the mass of the first alkali metal according to the set density of the first alkali metal and the saturated steam density of the first alkali metal, and calculating to obtain the mass of the second alkali metal according to the set density of the second alkali metal and the saturated steam density of the second alkali metal; and calculating and obtaining the mass ratio of the two alkali metals according to the mass of the first alkali metal and the mass of the second alkali metal.
As a specific embodiment of the present invention, the alkali metal may be any two of rubidium, cesium and potassium, and the two alkali metals are respectively Rb (rubidium) and K (potassium), the temperature is 130 ℃, and the required density ratio is 1:5. In the case of the monoalkali metal, the saturated vapor densities of the two alkali metals are respectively:
wherein T is temperature and the unit is K.
The densities of the two alkali metals after mixing are respectively as follows:
[Rb]＝fRb×[Rb]0，
[K]＝fK×[K]0，
Where f Rb is the mole fraction of Rb in the chamber and f K is the mole fraction of K in the chamber. M K is the mass of K in the chamber, M K is the molar mass of K, M Rb is the mass of Rb in the chamber, and M Rb is the molar mass of Rb, if [ Rb ]: [K] =1:5, calculated as m Rb:mK =1:3.
Further, after confirming the mass ratio of the two alkali metals to be charged, the alkali metals are transferred, and the two alkali metals in the ampoule bottle are transferred into the air chamber at a mass ratio of 1:3, and the mass ratio at this time is a rough mass ratio. Specifically, as shown in fig. 4, the heating assembly 80 and the cooling assembly 90 are disposed on a glass tube, the glass hammer 130 is attracted to the position of the alkali metal ampoule 140 by a tool and the alkali metal ampoule 140 is broken by an outlet, and the alkali metal source is baked by an external heat source to generate alkali metal gas to enter the pipeline system; forming a temperature gradient across the piping system by the heating assembly 80 and the cooling assembly 90 such that the alkali metal gas is directionally transferred from the corresponding piping portion of the heating assembly 80 to the corresponding piping portion of the cooling assembly 90 until no alkali metal gas is present in the corresponding piping portion of the heating assembly 80; the heating assembly 80 and the cooling assembly 90 are moved integrally along the pipeline system so that the heating assembly 80 is positioned at the position of the alkali metal in the pipeline system, and the above process is repeated until the alkali metal reaches the atomic gas chamber completely, thereby completing the transfer of the alkali metal.
After the transfer of the alkali metal is completed, a light intensity detection loop can be constructed to detect light intensity data transmitted by the light of the laser light source through the atomic air chamber, the density of the first alkali metal and the density of the second alkali metal are obtained based on the light intensity data transmitted by the light of the laser light source through the atomic air chamber and the initial light intensity calculation of the laser emitted by the laser light source, and the density ratio of the first alkali metal to the second alkali metal is obtained according to the density of the first alkali metal and the density of the second alkali metal. Specifically, in the present invention, constructing a light intensity detection loop to detect light intensity data transmitted by light of a laser light source through an atomic gas chamber, and calculating and obtaining a density of a first alkali metal and a density of a second alkali metal based on the light intensity data transmitted by light of the laser light source through the atomic gas chamber and an initial light intensity of laser light emitted by the laser light source specifically includes: the laser emitted by the laser source sequentially passes through the gram taylor and the 1/2 wave plate 170 and then enters the polarization beam splitter prism 180 (namely PBS) to be split into first laser and second laser, the first laser passes through the atomic air chamber 220 and then enters the first photoelectric detector 200, the first photoelectric detector 200 collects and acquires the light intensity of the laser transmitted from the atomic air chamber, the second laser passes through the right-angle prism and then enters the second photoelectric detector 210, and the second photoelectric detector 210 acquires the initial light intensity of the laser emitted by the laser source; the density of the first alkali metal and the density of the second alkali metal are calculated and obtained based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light source.
In the present invention, the calculation of the density of the first alkali metal and the density of the second alkali metal based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light source specifically includes: calculating and obtaining the density of the first alkali metal and the density of the second alkali metal based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light sourceCalculating a first parameter A1 and a third parameter gamma 1 for obtaining the first alkali metal, wherein P T(ν1) is the light intensity of the first alkali metal laser transmitted from the atomic gas chamber, P 0(ν1) is the initial light intensity of the first alkali metal laser emitted by the laser light source, v 01 is the absorption frequency of the absorption point of the first alkali metal, and v 1 is the spectral absorption frequency of the first alkali metal; according to/>Calculating a second parameter A2 and a fourth parameter gamma 2 for obtaining the second alkali metal, wherein P T(ν2) is the light intensity of the second alkali metal laser transmitted from the atomic gas chamber, P 0(ν2) is the initial light intensity of the second alkali metal laser emitted by the laser light source, v 02 is the absorption frequency of the second alkali metal absorption point, v 2 is the spectral absorption frequency of the second alkali metal, and A1, A2, C, gamma 1 and gamma 2 are parameters to be fitted; the density of the first alkali metal is obtained by calculating according to a first parameter A1 and a third parameter Γ1 of the first alkali metal and according to A1= [ 1recfoscdc ] Γ1/2, the density of the second alkali metal is obtained by calculating according to a second parameter A2 and a fourth parameter Γ2 of the second alkali metal and according to A2= [ [ 2recfoscdc ] Γ2/2, wherein r e is the electron radius, c is the speed of light, f osc is a constant, f osc＝0.324,dc is the length of a gas chamber, [ [ 1 ] is the density of the first alkali metal, and [ (2 ] is the density of the second alkali metal.
As a specific embodiment of the present invention, assuming that two alkali metals are Rb (rubidium) and K (potassium), r e is an electron radius, r e＝2.8×10-15 m, c is a light velocity, c=3×10 8,fosc is a constant, f osc＝0.324,dc is a length of 4mm of the air chamber, densities of Rb and K atoms can be calculated by the above formula, and a density ratio of the Rb and the K atoms is calculated, if the calculated [ Rb ]/[ K ] is larger than a theoretical value, a proper amount of K is charged, if the calculated [ Rb ]/[ K ] is smaller than the theoretical value, a proper amount of Rb is charged, and the steps of detecting and charging are repeated until the actual value is equal to the theoretical value, namely, the charging of the dialkali metal atoms is completed.
Further, in the present invention, after the filling of the alkali metal atoms is completed, a plurality of gases of the atomic gas chamber may be filled into the atomic gas chamber of the double-exhaust gas chamber. In the present invention, the filling of a plurality of gases of an atomic gas chamber into an atomic gas chamber of a double-exhaust gas chamber specifically includes: opening a first air source, wherein first air in the first air source enters an atomic air chamber, detecting the pressure of the first air in the first air source, and closing the first air source when the pressure of the first air in the first air source reaches a set pressure of the first air; opening a second gas source, wherein the second gas in the second gas source enters an atomic gas chamber, detecting the second gas pressure in the second gas source, and closing the second gas source when the second gas pressure in the second gas source reaches the set second gas pressure; and repeating the above processes to sequentially finish the filling of a plurality of gases. Specifically, as shown in fig. 3, a plurality of gas sources are provided, one gas source corresponding to each gas, according to the kind of the gas in the atomic gas chamber to be manufactured. When the gas is charged, the first gas is first charged. Opening a first air source, wherein first air in the first air source enters the atomic air chamber body, detecting the pressure of the first air in the first air source by using a pressure gauge 100, and closing the first air source when the pressure of the first air in the first air source reaches a set first air pressure; and opening a second air source, wherein the second air in the second air source enters the atomic air chamber body, detecting the second air pressure in the second air source by using the pressure gauge 100, closing the second air source when the second air pressure in the second air source reaches the set second air pressure, and repeating the process until the filling of a plurality of gases is completed.
Further, in order to precisely quantify the multiple gas components in the atomic gas chamber, when the partial pressure of any gas is not within the set gas partial pressure threshold range, the partial pressure of any gas is adjusted until the partial pressures of all the gases in the atomic gas chamber are within the set gas partial pressure threshold range, specifically including: when the partial pressure of any gas is smaller than the set partial pressure threshold range of any gas, opening a gas source of any gas, and supplementing any gas in the atomic gas chamber until the partial pressure of any gas is within the set partial pressure threshold range of any gas; when the partial pressure of any gas is larger than the set range of the partial pressure threshold of any gas, the mixed gas in the atomic gas chamber is pumped out by a set volume, and the pressure of the mixed gas in the atomic gas chamber body is detected again until the partial pressure of any gas is within the set range of the partial pressure threshold of any gas.
Further, in the present invention, in order to reduce the influence of the gas tube on the detection of the gas composition of the atomic gas chamber, when the size of the atomic gas chamber is 6mm, the diameter range of each of the first gas tube and the second gas tube may be configured to be 2.5mm to 3.5mm, and the diameter range of the ampoule bottle may be 8.5mm to 9.5mm.
According to another aspect of the present invention, there is provided a system for testing a gas composition in an atomic gas chamber, which performs a gas composition test using the method for testing a gas composition in an atomic gas chamber as described above.
By means of the configuration mode, the testing system for the gas components in the atomic gas chamber is provided, the double exhaust gas chambers are designed, when the double exhaust gas chambers are manufactured, the components and the proportions of the gas in the gas chambers are read out through the pressure gauge and the online mass spectrometer, the atomic gas chambers connected with ampoule bottles are connected to the mass spectrum system after the ampoule bottles are placed on the stage, the ampoule bottles are opened by using the glass hammer after the ampoule bottles are vacuumized, the components and the proportions of the gas in the gas chambers are tested by using the mass spectrum system, and the components and the proportions of the gas components in the atomic gas chambers after the stage can be accurately evaluated by the testing system.
Further, in order to accomplish accurate testing of the gas composition in the atomic gas chamber, in the present invention, the testing system of the gas composition in the atomic gas chamber may be configured to include a double exhaust gas chamber 220, a striking device 250, a vacuum line 240 and a mass spectrometry system 230, the double exhaust gas chamber including a first gas pipe 221, a second gas pipe 222, an atomic gas chamber 223 and an ampoule bottle 224, the first gas pipe 221 being disposed at one end of the atomic gas chamber 223, the second gas pipe 222 being disposed at the other end of the atomic gas chamber 223, the ampoule bottle 224 including a bottle 2241 and a sintering head 2242, the sintering head 2242 being disposed in the bottle 2241, one end of the bottle 2241 being connected to the atomic gas chamber 223 through the second gas pipe 222, the other end of the bottle 2241 being an open end, the striking device 250 striking and breaking the sintering head 2242 to communicate the vacuum line 240 with the atomic gas chamber 223, the mass spectrometry system 230 being used for evacuating the other end of the ampoule bottle 224 and the vacuum line 240 and for analyzing the gas composition and the gas ratio in the atomic gas chamber 223.
For a further understanding of the present invention, the following describes in detail the method for testing the composition of the gas in the atomic gas chamber provided by the present invention with reference to fig. 1 to 5.
As shown in fig. 1 to 5, a method for testing a gas composition in an atomic gas chamber according to an embodiment of the present invention is provided, and the method specifically includes the following procedures.
Firstly, designing a double-exhaust-pipe air chamber 220, wherein the double-exhaust-pipe air chamber 220 comprises a first air pipe 221, a second air pipe 222, an atomic air chamber 223 and an ampoule bottle 224, the first air pipe is arranged at one end of the atomic air chamber 223, the second air pipe 222 is arranged at the other end of the atomic air chamber, the ampoule bottle 224 comprises a bottle 2241 and a sintering head 2242, the sintering head 2242 is arranged in the bottle 2241, one end of the bottle 2241 is connected with the atomic air chamber 223 through the second air pipe 222, and the other end of the bottle 2241 is an open end; the first gas pipe 221 of the atomic gas chamber 223 is connected to a glass pipe, and the glass pipe is connected to a vacuum pipe. In the present embodiment, the size of the atomic gas chamber 223 is 6mm, the sizes of the first gas tube 221 and the second gas tube 222 are 2.5mm to 3.5mm, and the diameter of the ampoule is 8.5mm to 9.5mm.
And secondly, cleaning and drying the double exhaust gas chamber 220 and the glass pipeline, connecting the atomic gas chamber into a vacuum system through sintering of a glass lamp, testing the leak rate of the system by using a leak detector, heating and vacuumizing the main pipeline and the atomic gas chamber glass system for 24 hours, and removing the foreign gas in the system until the vacuum degree of the system reaches 10 < -6 > Pa.
Third, alkali metal is charged into the atomic gas chamber of the double exhaust gas chamber 220, and the ratio of alkali metal charging is determined using an on-line detection system.
And fourthly, filling gas in the atomic gas chamber, filling the required gas into the gas chamber through a pressure gauge, fully mixing the component gases for one hour, and analyzing the sampled gas by adopting a mass spectrometer to obtain the pressure of each component of the sampled gas. Specifically, in the embodiment, the gases in different gas sources are sequentially filled into a vacuum pipeline from small to large according to partial pressure, and the partial pressures of the different gases are recorded by the reading of a pressure gauge; after various gases are fully mixed and stabilized, a partial pressure sampling valve is opened, so that the gas pressure in a sampling pipeline is within the working pressure range of a mass spectrometer, and the sampling valve is closed; measuring the gas type and partial pressure in the sampled gas by using a mass spectrometer; the accurate pressure of each gas is calculated by combining the gas pressure in the main pipeline and the gas type and partial pressure measured by the mass spectrometer. When the partial pressure of each gas in the atomic gas chamber body is within the set gas partial pressure threshold range, the filling of the gas in the double-exhaust gas chamber 220 is completed; when the partial pressure of any gas is not within the set gas partial pressure threshold range, the partial pressure of any gas is adjusted until the partial pressures of the respective gases in the atomic gas chambers of the double exhaust gas chamber 220 are within the set gas partial pressure threshold range.
And fifthly, utilizing a blast lamp to clamp the double-exhaust-pipe air chamber 220 from the vacuum pipeline clamp, and completing the manufacture of the double-exhaust-pipe air chamber 220.
And sixthly, connecting the other end of the ampoule bottle body with the double exhaust pipe air chamber into a vacuum pipeline of the mass spectrum system, and placing a striking device 250 in the vacuum pipeline of the mass spectrum system.
Seventh, the other end of the ampoule bottle and the vacuum pipeline 240 are vacuumized by the mass spectrum system 230, and when the set vacuum degree is reached, the vacuumizing function of the mass spectrum system is closed, and the mass spectrum analysis function of the mass spectrum system is started.
And eighth, the striking device 250 is utilized to strike and crush the sintering head so as to enable the vacuum pipeline to be communicated with the atomic gas chamber, and the mass spectrometry system is utilized to analyze the gas components and the gas proportions in the atomic gas chamber so as to complete the testing of the gas components in the atomic gas chamber.
In summary, the invention provides a method for testing gas components in an atomic gas chamber, which comprises the steps of designing a double-exhaust-pipe gas chamber, reading out the components and the proportions of the gas in the gas chamber through a pressure gauge and an online mass spectrometer when the double-exhaust-pipe gas chamber is manufactured, connecting the atomic gas chamber connected with an ampoule bottle to a mass spectrum system after the double-exhaust-pipe gas chamber is arranged in a background, opening the ampoule bottle by using a glass hammer after vacuumizing, and testing the components and the proportions of the gas in the gas chamber through the mass spectrum system. Compared with the prior art, the method for testing the gas components in the atomic gas chamber provided by the invention has the advantages that the method for testing the gas components in the gas chamber is realized, the influence of impurity gases in the crushing method is eliminated, the test of the gas components and the proportion in the miniature atomic gas chamber can be realized, the control performance of the atomic gas chamber is improved, the requirements of a high-precision magnetic resonance gyroscope on the performance of the gas chamber are met, and the precision of the nuclear magnetic resonance gyroscope is further improved.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The method for testing the gas composition in the atomic gas chamber is characterized by comprising the following steps of:
Designing a double-exhaust-pipe air chamber, wherein the double-exhaust-pipe air chamber comprises a first air pipe, a second air pipe, an atomic air chamber and an ampoule bottle, the first air pipe is arranged at one end of the atomic air chamber, the second air pipe is arranged at the other end of the atomic air chamber, the ampoule bottle comprises a bottle body and a sintering head, the sintering head is arranged in the bottle body, one end of the bottle body is connected with the atomic air chamber through the second air pipe, and the other end of the bottle body is an open end;
Connecting a first air pipe of the atomic air chamber with a glass pipeline, and connecting the glass pipeline with a vacuum pipeline;
vacuumizing the glass pipeline and the vacuum pipeline, detecting the leakage rate of the atomic air chamber, and replacing the double-exhaust-pipe air chamber when the leakage rate of the atomic air chamber exceeds a set leakage rate threshold range until the atomic air chamber leakage rate of the double-exhaust-pipe air chamber is within the set leakage rate threshold range;
Disposing a heating assembly and a cooling assembly on the glass tube, the heating assembly being positioned on a side of the glass tube adjacent to a source of alkali metal in the glass tube, the heating assembly and the cooling assembly being configured to cause the glass tube to form a temperature gradient;
the heating component and the refrigerating component move along the glass pipeline so as to realize directional transfer of alkali metal along the glass pipeline, and after a set time, the alkali metal is completely transferred into the atomic gas chamber;
Filling a plurality of gases of an atomic gas chamber into the atomic gas chamber of the double-exhaust-pipe gas chamber through the first gas pipe, detecting each gas pressure in the atomic gas chamber, and adjusting the partial pressure of any one of the gases when the partial pressure of any one of the gases is not in a set gas partial pressure threshold range until the partial pressure of each of the gases in the atomic gas chamber is in the set gas partial pressure threshold range; testing the gas components and the proportions of the gases in the atomic gas chamber by using a mass spectrometer, and completing the filling of the gas in the double-exhaust-pipe gas chamber when the gas components and the proportions of the gases in the atomic gas chamber are all in a set gas proportion threshold range;
sintering the double exhaust pipe air chamber to be placed on a lower stage;
The other end of the ampoule bottle body with the double-exhaust air chamber is connected to a vacuum pipeline of a mass spectrum system, and a striking device is placed in the vacuum pipeline of the mass spectrum system;
Vacuumizing the other end of the ampoule bottle and the vacuum pipeline by using the mass spectrum system, closing the vacuumizing function of the mass spectrum system after reaching a set vacuum degree, and starting the mass spectrum analysis function of the mass spectrum system;
and the beating device is used for beating and crushing the sintering head so as to enable the vacuum pipeline to be communicated with the atomic gas chamber, and the mass spectrum system is used for analyzing the gas components and the gas proportions in the atomic gas chamber so as to complete the testing of the gas components in the atomic gas chamber.
2. The method for testing a gas composition in an atomic gas chamber according to claim 1, wherein filling a plurality of gases in the atomic gas chamber into the atomic gas chamber of the double exhaust gas chamber specifically comprises: opening a first gas source, wherein first gas in the first gas source enters the atomic gas chamber, detecting the pressure of the first gas in the first gas source, and closing the first gas source when the pressure of the first gas in the first gas source reaches a set first gas pressure; opening a second gas source, wherein second gas in the second gas source enters the atomic gas chamber, detecting second gas pressure in the second gas source, and closing the second gas source when the second gas pressure in the second gas source reaches a set second gas pressure; and repeating the above processes to sequentially finish the filling of a plurality of gases.
3. The method for testing a gas composition in an atomic gas chamber according to claim 2, wherein when the partial pressure of any one of the gases is not within a set gas partial pressure threshold range, adjusting the partial pressure of any one of the gases until the partial pressures of the respective gases in the atomic gas chamber are within the set gas partial pressure threshold range specifically comprises: when the partial pressure of any one of the gases is smaller than the set range of the partial pressure threshold of any one of the gases, opening a gas source of any one of the gases, and supplementing any one of the gases in the atomic gas chamber until the partial pressure of any one of the gases is within the set range of the partial pressure threshold of any one of the gases; and when the partial pressure of any one of the gases is larger than the set range of the partial pressure of any one of the gases, extracting the mixed gas in the atomic gas chamber by a set volume, and re-detecting the pressure of the mixed gas in the atomic gas chamber body until the partial pressure of any one of the gases is within the set range of the partial pressure of any one of the gases.
4. A method of testing a gas composition in an atomic gas chamber according to any one of claims 1 to 3, wherein the first and second gas tubes each have a diameter in the range 2.5mm to 3.5mm and the ampoule has a diameter in the range 8.5mm to 9.5mm.
5. The method of testing a gas composition within an atomic gas chamber of claim 1, wherein the alkali metal within the atomic gas chamber comprises a first alkali metal and a second alkali metal, the method of testing a gas composition within an atomic gas chamber further comprising, prior to the heating assembly and the cooling assembly moving along the glass tube to effect directional transfer of alkali metal along the glass tube: confirming the mass ratio of the two alkali metals to be charged according to the set density ratio of the first alkali metal and the second alkali metal; after the heating assembly and the cooling assembly move along the glass tube to achieve directional transfer of alkali metal along the glass tube, the testing method of the gas component in the atomic gas chamber further comprises the following steps: constructing a light intensity detection loop to detect light intensity data transmitted by light rays of a laser light source through an atomic air chamber, calculating and acquiring the density of first alkali metal and the density of second alkali metal based on the light intensity data transmitted by the light rays of the laser light source through the atomic air chamber and the initial light intensity of laser emitted by the laser light source, and calculating and acquiring the density ratio of the first alkali metal to the second alkali metal according to the density of the first alkali metal and the density of the second alkali metal; when the density ratio of the first alkali metal to the second alkali metal exceeds a set density ratio threshold range, continuing to charge the second alkali metal into the atomic gas chamber, and repeating the process until the density ratio of the first alkali metal to the second alkali metal is in the set density ratio threshold range; and when the density ratio of the first alkali metal to the second alkali metal is smaller than a set density ratio threshold range, continuing to charge the first alkali metal into the atomic gas chamber, and repeating the process until the density ratio of the first alkali metal to the second alkali metal is in the set density ratio threshold range.
6. The method according to claim 5, wherein constructing a light intensity detection circuit to detect light intensity data transmitted by light of the laser light source through the atomic cell, and calculating and obtaining the density of the first alkali metal and the density of the second alkali metal based on the light intensity data transmitted by light of the laser light source through the atomic cell and the initial light intensity of the laser light emitted by the laser light source specifically comprises: the laser emitted by the laser source sequentially passes through a gram Taylor and a 1/2 wave plate and then enters a polarization beam splitting prism to be split into first laser and second laser, the first laser passes through an atomic air chamber and then enters a first photoelectric detector, the first photoelectric detector acquires the light intensity of the laser transmitted from the atomic air chamber, the second laser passes through a right-angle prism and then enters a second photoelectric detector, and the second photoelectric detector acquires the initial light intensity of the laser emitted by the laser source; the density of the first alkali metal and the density of the second alkali metal are calculated and obtained based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light source.
7. The method according to claim 6, wherein calculating the density of the first alkali metal and the density of the second alkali metal based on the light intensity of the laser light emitted from the atomic gas chamber and the initial light intensity of the laser light emitted from the laser light source comprises: calculating and obtaining the density of the first alkali metal and the density of the second alkali metal based on the light intensity of the laser transmitted from the atomic gas chamber and the initial light intensity of the laser emitted from the laser light sourceCalculating a first parameter A1 and a third parameter Γ1 of the first alkali metal, wherein P T(ν1) is the light intensity of the first alkali metal laser transmitted from the atomic gas chamber, P 0(ν1) is the initial light intensity of the first alkali metal laser emitted by the laser light source, v 01 is the absorption frequency of the absorption point of the first alkali metal, and v 1 is the spectral absorption frequency of the first alkali metal; according to/>Calculating a second parameter A2 and a fourth parameter Γ2 of the second alkali metal, wherein P T(ν2) is the light intensity of the second alkali metal laser transmitted from the atomic gas chamber, P 0(ν2) is the initial light intensity of the second alkali metal laser emitted by the laser light source, v 02 is the absorption frequency of the second alkali metal absorption point, v 2 is the spectral absorption frequency of the second alkali metal, and A1, A2, C, Γ1 and Γ2 are parameters to be fitted; calculating to obtain the density of the first alkali metal according to a 1= [ 1recfoscdc ] Γ1/2 based on a first parameter A1 and a third parameter Γ1 of the first alkali metal, calculating to obtain the density of the second alkali metal according to a 2= [ [ 2recfoscdc ] Γ2/2 based on A2 and a fourth parameter Γ2 of the second alkali metal, wherein r e is an electron radius, c is a speed of light, f osc is a constant, f osc＝0.324,dc is a length of a gas chamber, [ [ 1 ] is the density of the first alkali metal, and [ (2 ] is the density of the second alkali metal.
8. The method for testing a gas composition in an atomic gas chamber according to claim 7, wherein confirming the mass ratio of the two alkali metals to be charged according to the set density ratio of the first alkali metal and the second alkali metal specifically comprises: acquiring the saturated steam density of the first alkali metal and the saturated steam density of the second alkali metal; calculating to obtain the mass of the first alkali metal according to the set density of the first alkali metal and the saturated steam density of the first alkali metal, and calculating to obtain the mass of the second alkali metal according to the set density of the second alkali metal and the saturated steam density of the second alkali metal; and calculating and obtaining the mass ratio of the two alkali metals according to the mass of the first alkali metal and the mass of the second alkali metal.
9. A system for testing a gas composition in an atomic gas chamber, wherein the system for testing a gas composition in an atomic gas chamber performs a gas composition test using the method for testing a gas composition in an atomic gas chamber according to any one of claims 1 to 8.
10. The system for testing a gas composition within an atomic gas chamber according to claim 7, wherein the system for testing a gas composition within an atomic gas chamber comprises:
A vacuum pipeline;
The ampoule bottle comprises a bottle body and a sintering head, wherein the sintering head is arranged in the bottle body, one end of the bottle body is connected with the atomic air chamber through the second air pipe, and the other end of the bottle body is an open end;
The beating device is used for beating and crushing the sintering head so as to enable the vacuum pipeline to be communicated with the atomic air chamber;
and the mass spectrum system is used for vacuumizing the other end of the ampoule bottle and the vacuum pipeline and analyzing the gas components and the gas proportion in the atomic gas chamber.
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| CN112378603A (en) * | 2020-11-18 | 2021-02-19 | 北京自动化控制设备研究所 | Leakage rate detection method and system for atomic gas chamber |
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