CN112461225A - Long-life atomic gas chamber based on alkali metal slow release and preparation method thereof - Google Patents
Long-life atomic gas chamber based on alkali metal slow release and preparation method thereof Download PDFInfo
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- CN112461225A CN112461225A CN202011212201.XA CN202011212201A CN112461225A CN 112461225 A CN112461225 A CN 112461225A CN 202011212201 A CN202011212201 A CN 202011212201A CN 112461225 A CN112461225 A CN 112461225A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/60—Electronic or nuclear magnetic resonance gyrometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
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- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/14—Apparatus for producing preselected time intervals for use as timing standards using atomic clocks
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Abstract
The invention provides an alkali metal slow release-based long-life atomic gas chamber and a preparation method thereof, which are applied to the field of atomic gas chamber preparation. Based on the adsorption effect of the 5A molecular sieve, the integrally-formed slow release block is arranged in the atomic gas chamber to adsorb excessive alkali metal in the gas chamber, so that the working life of the gas chamber can be effectively prolonged, and the use amount of the alkali metal is reduced; on the other hand, the enrichment of excessive alkali metal on the light passing surface of the air chamber can be prevented, and the damage of the light transmittance reduction of the light passing surface to the performance of the instrument is avoided. The atomic gas chamber prepared by the method has the advantages of long service life, small alkali metal consumption and stable performance. The invention utilizes the slow release effect of the 5A molecular sieve on alkali metal, and can solve the problem that the service life of the atomic gas chamber is limited by the amount of the alkali metal and the light transmission rate of the atomic gas chamber is reduced due to the enrichment of the alkali metal on the light transmission surface of the gas chamber.
Description
Technical Field
The invention relates to the technical field of atomic gas chamber manufacturing, in particular to a preparation method of a long-life atomic gas chamber based on alkali metal slow release.
Background
The atomic gas chamber is a core component of an atomic interference magnetometer, an atomic clock, an atomic gyroscope and other equivalent instruments. The atomic gas chamber is a glass bubble (mainly spherical, cubic, etc.) filled with alkali metal and buffer gas, and is a physical place where atomic polarization, spin exchange, spin relaxation, spin precession, etc. occur. The long-life atomic gas chamber is beneficial to prolonging the service life of the quantum instrument, and is also the key for improving the performance of the quantum instrument and promoting the performance of the quantum instrument to be practical at the present stage.
The service life of the atomic gas chamber is mainly determined by the amount of alkali metal in the gas chamber, and the amount of the alkali metal is continuously reduced due to chemical reaction and slow leakage through the wall surface of the gas chamber in the working process of the atomic gas chamber. When the amount of alkali metal is insufficient to maintain a sufficient amount of gaseous alkali metal in the atomic cell, the atomic cell fails and continues to operate. At present, in order to improve the service life of the atomic gas chamber, excess alkali metal is mainly flushed into the atomic gas chamber during preparation. However, the excessive alkali metal is concentrated on the inner wall of the atomic gas chamber, which brings about adverse effects such as reduction of light transmittance of the atomic gas chamber.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a long-life atomic gas chamber based on alkali metal slow release and a preparation method thereof. Based on the adsorption effect of the 5A molecular sieve, the integrated slow release block is arranged in the atomic gas chamber to adsorb excessive alkali metal in the gas chamber, so that the service life of the gas chamber can be effectively prolonged, and the use amount of the alkali metal is reduced; on the other hand, the enrichment of excessive alkali metal on the light passing surface of the air chamber can be prevented, and the damage of the light transmittance reduction of the atomic air chamber to the performance of the instrument is avoided.
The above purpose of the invention is mainly realized by the following technical scheme:
a long-life atomic gas chamber based on alkali metal slow release is characterized in that the atomic gas chamber is a cavity filled with alkali metal and working gas, a slow release block made of a 5A molecular sieve material is arranged in the cavity to adsorb excessive alkali metal, and therefore the service life of the atomic gas chamber is prolonged; and a filling opening is arranged above the atom air chamber, and a filling pipe used for being connected with the outside is arranged on the filling opening.
The glass shell of the atomic gas chamber is a square shell with the side length of 10mm and the wall thickness of 1mm, is made of quartz glass, and has the diameter of a filling circular hole of 0.75 mm.
The filler tube has an outer diameter of 3mm and an inner diameter of 1 mm.
The slow release block is a cylinder with the diameter of 0.95mm and the height of 1mm, and is made of a 5A molecular sieve.
A preparation method of a long-life atomic gas chamber based on alkali metal slow release comprises the following steps:
(1) soaking the integrally formed sustained-release block into deionized water, carrying out ultrasonic cleaning, taking out, and baking the sustained-release block at 200 ℃ for 24 hours to degas;
(2) the slow release block is filled at the bottom of an atomic gas chamber filling pipe, namely above an atomic gas chamber filling opening;
(3) connecting the filling pipe of the atom air chamber to a vacuum system, and vacuumizing the glass air chamber by using a vacuum pump until the pressure is less than 5 multiplied by 10-4Pa；
(4) Filling alkali metal and working gas into the air chamber through the filling pipe;
(5) the filling pipe connected with the glass air chamber is sealed and fused to ensure that the slow release block is coated and fixed;
(6) and transferring the alkali metal in the gas chamber to the slow release block by using a local heating mode to prepare the long-life atomic gas chamber.
The slow release block is made of a 5A molecular sieve, is annular in shape and is manufactured by an integral forming process.
The slow release block is arranged at the bottom of the air chamber filling pipe, namely above the air chamber filling opening but not entering the air chamber cavity
Compared with the prior art, the invention has the following beneficial effects:
(1) after the slow release block adsorbs the alkali metal in the atomic gas chamber prepared by the method, when the gas chamber works, the sufficient alkali metal atomic density in the gas phase can be ensured, meanwhile, the leakage of the alkali metal through the glass shell can be reduced, and the service life of the gas chamber can be effectively prolonged;
(2) most of alkali metal in the atomic gas chamber prepared by the method is adsorbed by the slow release block, so that the enrichment of excessive alkali metal on the light passing surface of the gas chamber can be prevented, and the damage of the reduction of the light transmittance of the atomic gas chamber to the performance of the instrument is avoided.
Drawings
FIG. 1 is a schematic diagram of a preparation method of a long-life atomic gas cell based on alkali metal slow release.
Detailed Description
The invention will now be described in further detail with reference to the accompanying figure 1 and specific examples:
the glass shell of the atomic gas chamber is a square shell with the side length of 10mm and the wall thickness of 1mm, is made of quartz glass, and is filled with round holes with the diameter of 0.75 mm; the outer diameter of the filling pipe is 3mm, and the inner diameter of the filling pipe is 1 mm; the slow release block is a cylinder with the diameter of 0.95mm and the height of 1mm, and is made of a 5A molecular sieve.
A long-life atomic gas chamber based on alkali metal slow release and a preparation method thereof comprise the following steps:
(1) soaking the integrally formed sustained-release block into deionized water, carrying out ultrasonic cleaning, taking out, and then baking the sustained-release block at the high temperature of 200 ℃ for 24 hours to degas;
(2) the slow release block is filled at the bottom of an atomic gas chamber filling pipe, namely above a gas chamber filling opening;
(3) connecting the filling pipe of the atom air chamber to a vacuum system, and vacuumizing the air chamber by using a vacuum pump until the pressure is less than 5 multiplied by 10-4Pa；
(4) Filling alkali metal and working gas into the air chamber through the filling pipe;
(5) the filling pipe connected with the glass air chamber is sealed and fused to ensure that the slow release block is coated and fixed;
(6) and transferring the alkali metal in the gas chamber to the slow release block by using a local heating mode to prepare the long-life atomic gas chamber.
In the long-life atomic gas chamber based on alkali metal slow release and the preparation method thereof, the slow release block in the step (1) is made of a 5A molecular sieve in an annular shape by an integral forming process.
In the long-life atomic gas chamber based on alkali metal slow release and the preparation method thereof, the slow release block in the step (2) is clamped at the bottom of the gas chamber filling pipe, namely above the gas chamber filling port, but cannot enter the gas chamber cavity.
The above description is only one embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (7)
1. A long-life atomic gas chamber based on alkali metal slow release is characterized in that: the atomic gas chamber is a cavity filled with alkali metal and working gas, a slow release block made of a 5A molecular sieve material is arranged in the cavity to adsorb excessive alkali metal, so that the service life of the atomic gas chamber is prolonged; and a filling opening is arranged above the atom air chamber, and a filling pipe used for being connected with the outside is arranged on the filling opening.
2. The long-life atomic gas cell based on the alkali metal slow release as set forth in claim 1, wherein: the glass shell of the atomic gas chamber is a square shell with the side length of 10mm and the wall thickness of 1mm, is made of quartz glass, and has the diameter of a filling circular hole of 0.75 mm.
3. The long-life atomic gas cell based on the alkali metal slow release as set forth in claim 1, wherein: the filler tube has an outer diameter of 3mm and an inner diameter of 1 mm.
4. The long-life atomic gas cell based on the alkali metal slow release as set forth in claim 1, wherein: the slow release block is a cylinder with the diameter of 0.95mm and the height of 1mm, and is made of a 5A molecular sieve.
5. A preparation method of a long-life atomic gas chamber based on alkali metal slow release is characterized by comprising the following steps:
(1) soaking the integrally formed sustained-release block into deionized water, carrying out ultrasonic cleaning, taking out, and baking the sustained-release block at 200 ℃ for 24 hours to degas;
(2) the slow release block is filled at the bottom of an atomic gas chamber filling pipe, namely above an atomic gas chamber filling opening;
(3) connecting the filling pipe of the atom air chamber to a vacuum system, and vacuumizing the glass air chamber by using a vacuum pump until the pressure is less than 5 multiplied by 10-4Pa；
(4) Filling alkali metal and working gas into the air chamber through the filling pipe;
(5) the filling pipe connected with the glass air chamber is sealed and fused to ensure that the slow release block is coated and fixed;
(6) and transferring the alkali metal in the gas chamber to the slow release block by using a local heating mode to prepare the long-life atomic gas chamber.
6. The method for preparing the long-life atomic gas cell based on the alkali metal slow release as claimed in claim 5, wherein the method comprises the following steps: the slow release block is made of a 5A molecular sieve, is annular in shape and is manufactured by an integral forming process.
7. The method for preparing the long-life atomic gas cell based on the alkali metal slow release as claimed in claim 5, wherein the method comprises the following steps: the slow release block is arranged at the bottom of the air chamber filling pipe, namely above the air chamber filling opening, but does not enter the air chamber cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011212201.XA CN112461225B (en) | 2020-11-03 | 2020-11-03 | Long-life atomic gas chamber based on alkali metal slow release and preparation method thereof |
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| CN202011212201.XA CN112461225B (en) | 2020-11-03 | 2020-11-03 | Long-life atomic gas chamber based on alkali metal slow release and preparation method thereof |
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| CN112461225A true CN112461225A (en) | 2021-03-09 |
| CN112461225B CN112461225B (en) | 2022-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199481A (en) * | 2021-11-11 | 2022-03-18 | 北京自动化控制设备研究所 | Method for manufacturing vacuum atomic gas chamber and device using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070260100A1 (en) * | 2003-10-02 | 2007-11-08 | Yun-Feng Cheng | Molecular sieve catalyst composition, its making and use in conversion processes |
| CN109950787A (en) * | 2019-03-08 | 2019-06-28 | 山西大学 | A kind of vapour of an alkali metal pond accurately controlling atomic density |
| CN110015636A (en) * | 2019-03-27 | 2019-07-16 | 浙江工业大学 | A kind of preparation method of full glass alkali metal atom air chamber |
| CN111026177A (en) * | 2019-12-18 | 2020-04-17 | 北京航空航天大学 | System and method for controlling humidity in alkali metal air chamber |
| CN111039552A (en) * | 2019-12-24 | 2020-04-21 | 北京航天控制仪器研究所 | Fusion sealing method for positive pressure filling glass air chamber based on low-temperature phase-change solder |
-
2020
- 2020-11-03 CN CN202011212201.XA patent/CN112461225B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070260100A1 (en) * | 2003-10-02 | 2007-11-08 | Yun-Feng Cheng | Molecular sieve catalyst composition, its making and use in conversion processes |
| CN109950787A (en) * | 2019-03-08 | 2019-06-28 | 山西大学 | A kind of vapour of an alkali metal pond accurately controlling atomic density |
| CN110015636A (en) * | 2019-03-27 | 2019-07-16 | 浙江工业大学 | A kind of preparation method of full glass alkali metal atom air chamber |
| CN111026177A (en) * | 2019-12-18 | 2020-04-17 | 北京航空航天大学 | System and method for controlling humidity in alkali metal air chamber |
| CN111039552A (en) * | 2019-12-24 | 2020-04-21 | 北京航天控制仪器研究所 | Fusion sealing method for positive pressure filling glass air chamber based on low-temperature phase-change solder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199481A (en) * | 2021-11-11 | 2022-03-18 | 北京自动化控制设备研究所 | Method for manufacturing vacuum atomic gas chamber and device using same |
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| CN112461225B (en) | 2022-07-29 |
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