CN112808004A - Isotope electromagnetic separation method - Google Patents
Isotope electromagnetic separation method Download PDFInfo
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- CN112808004A CN112808004A CN202011640254.1A CN202011640254A CN112808004A CN 112808004 A CN112808004 A CN 112808004A CN 202011640254 A CN202011640254 A CN 202011640254A CN 112808004 A CN112808004 A CN 112808004A
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- 238000000926 separation method Methods 0.000 title claims abstract description 58
- 150000002500 ions Chemical class 0.000 claims abstract description 53
- 238000010884 ion-beam technique Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000010891 electric arc Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 14
- 238000009792 diffusion process Methods 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 230000000155 isotopic effect Effects 0.000 claims 1
- 229910052701 rubidium Inorganic materials 0.000 abstract description 16
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract description 16
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052700 potassium Inorganic materials 0.000 abstract description 15
- 239000011591 potassium Substances 0.000 abstract description 15
- 229910052691 Erbium Inorganic materials 0.000 abstract description 14
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052712 strontium Inorganic materials 0.000 abstract description 12
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 9
- 238000011112 process operation Methods 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000012217 radiopharmaceutical Substances 0.000 description 3
- 229940121896 radiopharmaceutical Drugs 0.000 description 3
- 230000002799 radiopharmaceutical effect Effects 0.000 description 3
- IGLNJRXAVVLDKE-NJFSPNSNSA-N Rubidium-87 Chemical compound [87Rb] IGLNJRXAVVLDKE-NJFSPNSNSA-N 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005372 isotope separation Methods 0.000 description 2
- 150000003438 strontium compounds Chemical class 0.000 description 2
- CIOAGBVUUVVLOB-IGMARMGPSA-N strontium-88 atom Chemical compound [88Sr] CIOAGBVUUVVLOB-IGMARMGPSA-N 0.000 description 2
- CIOAGBVUUVVLOB-OUBTZVSYSA-N strontium-89 Chemical compound [89Sr] CIOAGBVUUVVLOB-OUBTZVSYSA-N 0.000 description 2
- 229940006509 strontium-89 Drugs 0.000 description 2
- 238000010273 cold forging Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- UYAHIZSMUZPPFV-BJUDXGSMSA-N erbium-166 Chemical compound [166Er] UYAHIZSMUZPPFV-BJUDXGSMSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/44—Separation by mass spectrography
- B01D59/48—Separation by mass spectrography using electrostatic and magnetic fields
Abstract
The invention discloses an isotope electromagnetic separation method, which comprises the following steps: starting a vacuum system, a water cooling system and a magnetic field power supply in a magnetic field device in the isotope electromagnetic separator; starting a power supply of an ion source in the isotope electromagnetic separator and performing the ion source cold exercise; controlling the ion source to form an ion beam that exits into a vacuum chamber in a vacuum system in the isotope electromagnetic separator; and controlling the deflection and separation of the ion beam by using the magnetic field device, and receiving the separated isotope ion beam by using a receiver in the isotope electromagnetic separator. The technical scheme of the invention provides a general isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements, the isotope abundance of rubidium, potassium, erbium and strontium separated by the method is high, the separation process scheme has universality, and the process operation is simple and easy to implement.
Description
Technical Field
The invention relates to the technical field of isotope electromagnetic separation, in particular to an isotope electromagnetic separation method.
Background
The isotope with high abundance has important application in the fields of national defense and military industry, radiopharmaceuticals and the like. For example, a high abundance rubidium 87 isotope is the core material of a satellite-borne rubidium atomic clock, and the abundance thereof directly affects the stability of the rubidium atomic clock. The high-sensitivity magnetometer has important application in the field of national defense, can be assembled on an anti-submarine machine, and is used for accurately detecting and positioning a deep-sea submarine. The isotopes of rubidium 87 and potassium 41 are core materials of the high-sensitivity magnetometer, and the abundance of the isotopes determines the distance of the anti-submarine to detect the submarine. The erbium 166 isotope is the core material for developing advanced detectors, and the abundance thereof directly influences the performance of the detector. Strontium 88 is a core precursor material for the radiopharmaceutical strontium 89, and the abundance of strontium 88 has a significant impact on the quality of the strontium 89 radiopharmaceutical.
Therefore, in order to obtain high abundance of rubidium, potassium, erbium and strontium elements, it is necessary to provide a general separation method for rubidium, potassium, erbium and strontium elements.
Disclosure of Invention
The invention mainly aims to provide a general isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements.
In order to achieve the above object, the present invention provides an isotope electromagnetic separation method, comprising: starting a vacuum system, a water cooling system and a magnetic field power supply in a magnetic field device in the isotope electromagnetic separator; starting a power supply of an ion source in the isotope electromagnetic separator and performing the ion source cold exercise; controlling the ion source to form an ion beam that exits into a vacuum chamber in a vacuum system in the isotope electromagnetic separator; and controlling the deflection and separation of the ion beam by using the magnetic field device, and receiving the separated isotope ion beam by using a receiver in the isotope electromagnetic separator.
Further, the starting of the magnetic field power supply in the vacuum system, the water cooling system and the magnetic field device in the isotope electromagnetic separator comprises: pumping the vacuum chamber to a vacuum of 3 × 10 with an oil diffusion pump-3Pa。
Further, the activating a power source of an ion source in the isotope electromagnetic separator and performing the ion source cold exercise includes: starting a power supply of an extraction slit electrode in the ion source to enable the voltage of the extraction slit electrode to gradually increase from 0 until the ignition is serious, and stopping boosting; after the ignition is eliminated, boosting again, when the voltage of the leading-out seam electrode is raised to 35kV, staying for 5 minutes, and then retreating to 0V; starting a power supply of a focusing electrode in the ion source, so that the voltage of the focusing electrode is gradually increased from 0, and the voltage is stopped to be increased until the ignition is serious; after the ignition is eliminated, boosting again, when the voltage of the focusing electrode is raised to-25 kV, staying for 5 minutes, and then returning to 0V; and raising the voltage of the extraction slit electrode to 30kV, and raising the voltage of the focusing electrode to-20 kV.
Further, the controlling the ion source to form an ion beam that exits into a vacuum chamber in a vacuum system in the isotope electromagnetic separator includes: turning on a power supply of a filament in the ion source, turning on a power supply of an arc discharge chamber in the ion source, and turning on a power supply of an arc chamber heater in the ion source; and gradually increasing the heating current of a crucible heating furnace cylinder in the ion source, generating arc discharge in the arc discharge chamber to form arc discharge plasma after the temperature of the crucible in the ion source is increased to a certain value, and leading out the arc discharge plasma through a grounding electrode, a focusing electrode and a leading-out slit electrode in the ion source to form an ion beam with certain energy and shape.
Further, the controlling the deflection and separation of the ion beam by using the magnetic field device comprises: and adjusting the current of an electromagnet in the magnetic field device.
Further, the controlling the ion beam deflection and separation by the magnetic field device, and receiving the separated isotope ion beam by the receiver in the isotope electromagnetic separator, further includes: and when the discharge in the arc discharge chamber is stable and the ion beam current is led out to be larger, adjusting each isotope to a position corresponding to a receiving pocket in the receiver.
Further, the adjusting each isotope to a position corresponding to a receiving pocket in the receiver further includes: adding the voltage of the extraction slit electrode to 30kV, entering a stable working state, and adjusting the current of an electromagnet in the magnetic field device to deflect the ion beam to hit a gear in the receiver; finely adjusting the current of an electromagnet in the magnetic field adjusting device to enable the ion beam to strike an alignment bar on the stop gate; and after the detection is correct, the shutter is opened, so that the ion beams enter the receiving pockets corresponding to the ion beams.
Further, the adjusting each isotope to a position corresponding to a receiving pocket in the receiver further includes: and detecting the current of a panel and each receiving pocket in the receiver, and finely adjusting the voltage of the extraction seam electrode or the current of an electromagnet in the magnetic field device, so that the receiving current of each receiving pocket is maximized and the current of the panel is minimized.
Further, before starting the vacuum system, the water cooling system and the magnetic field power supply in the magnetic field device in the isotope electromagnetic separator, the isotope electromagnetic separation method further comprises the following steps: dehydrating the separated raw material.
Further, the dehydrating the separated raw material comprises: heating the separated raw material in a heating furnace until the moisture in the separated raw material is evaporated.
Further, the separation raw material is chloride.
As described above, the invention provides a general isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements, isotopes of rubidium, potassium, erbium and strontium separated by the method have high abundance, the separation process scheme has universality, and the process operation is simple and easy to implement.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
FIG. 1 is a schematic illustration of a method of performing an isotope electromagnetic separation using an isotope electromagnetic separator in accordance with some embodiments of the present disclosure;
FIG. 2 is a schematic flow diagram of an isotope electromagnetic separation method in accordance with some embodiments of the invention;
FIG. 3 is a schematic diagram of an ion source for use in an isotope electromagnetic separation process in accordance with some embodiments of the present invention;
FIG. 4 is a schematic view of another angled ion source for use in the method of electromagnetic separation of isotopes according to some embodiments of the invention;
FIG. 5 is a schematic flow diagram illustrating ion source cold exercise performed in the isotope electromagnetic separation method in accordance with some embodiments of the present disclosure;
fig. 6 is a schematic flow chart illustrating a process of controlling an ion source to form an ion beam emitted into a vacuum chamber of a vacuum system in an electromagnetic isotope separation method according to some embodiments of the invention.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Description of reference numerals:
100. an isotope electromagnetic separator; 110. an ion source; 112. an ion beam; 120. a receiver; 130. a vacuum system; 301. a ground electrode; 302. a focusing electrode; 303. leading out a seam electrode; 304. a filament; 305. a cathode; 306. an electronic window; 307. a steam distribution chamber; 308. a crucible; 309. a heat reflective screen; 310. heating the furnace barrel by using a crucible; 311. a third lead-out seam; 312. a second lead-out slit; 313. a first lead-out slit; 314. a discharge chamber; 315. an arc discharge chamber; 316. an arc chamber heater.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
To achieve high abundance of the rubidium, potassium, erbium and strontium elements, some embodiments of the present invention provide a versatile isotope electromagnetic separation method for the rubidium, potassium, erbium and strontium elements.
The isotope electromagnetic separation method is to realize isotope separation by utilizing the different rotation radiuses of ions with the same energy and different masses in a transverse magnetic field. FIG. 1 is a schematic illustration of a method of performing an electromagnetic separation of isotopes using an electromagnetic separator of isotopes according to some embodiments of the invention. As shown in fig. 1, the isotope electromagnetic separator 100 includes an ion source 110, a receiver 120, a vacuum system 130, a water cooling system (not shown), and a magnetic field device (not shown). In the ion source 110, compounds of rubidium, potassium, erbium, and strontium are heated, vaporized, and ionized to form plasma, and are emitted from the ion source 110 to form an ion beam 112 having a certain energy and shape. Then, under the action of the transverse magnetic field formed in the vacuum system 130 by the magnetic field device, the ion beam 112 is deflected, mass-separated and angle-focused, and then received by the receiver 120 to complete the separation of isotopes, so that a plurality of isotopes of the same element can be obtained simultaneously. Methods of electromagnetic separation of isotopes according to some embodiments of the invention will be further described below.
Fig. 2 is a schematic flow diagram of an isotope electromagnetic separation method in accordance with some embodiments of the invention. As shown in fig. 2, the isotope electromagnetic separation method includes the following steps:
step 210: starting a magnetic field power supply in the vacuum system 130, the water cooling system and the magnetic field device;
step 230: starting the power supply of the ion source 110 and performing cold exercise of the ion source 110;
step 250: controlling the ion source 110 to form an ion beam 112 that exits into a vacuum chamber in the vacuum system 130;
step 270: the ion beam 112 is controlled to deflect, separate by magnetic field means, and the separated isotope ion beam is received by a receiver 120.
Wherein, in step 210, the vacuum in the vacuum chamber of the vacuum system 130 can be pumped to 3 × 10-3Pa. In one embodiment, the vacuum system 130 includes an oil diffusion pump connected to a vacuum chamber. The oil diffusion pump may be a large oil diffusion pump of 20000 liters/second. In step 210, an oil diffusion pump may be used to pump a vacuum in the vacuum chamber to 3 × 10-3Pa。
In addition, in step 210, after the water cooling system is started, cooling water may be delivered to the ion source 110, the receiver 120, the vacuum chamber liner, the magnetic field power supply, and the like, so as to ensure that the ion source 110, the receiver 120, the vacuum chamber liner, the magnetic field power supply, and the like operate in a normal temperature range.
In addition, in step 210, after the magnetic field power supply in the magnetic field device is activated, a transverse magnetic field may be formed in the vacuum chamber. The magnetic field means may comprise an electromagnet, and the strength of the transverse magnetic field may be controlled by adjusting the current in the electromagnet.
In step 230, by performing a cold exercise of the ion source 110, burrs on the electrodes and the like can be removed, thereby reducing sparking during normal operation of the ion source 110.
In one embodiment, as shown in fig. 3 and 4, the ion source 110 includes: a ground electrode 301, a focusing electrode 302, an extraction slit electrode 303, a filament 304, a cathode 305, an electron window 306, a vapor distribution chamber 307, a crucible 308, a heat reflection shield 309, a crucible heating furnace tube 310, a third extraction slit 311, a second extraction slit 312, a first extraction slit 313, a discharge chamber 314, an arc discharge chamber 315, and an arc chamber heater 316.
During use, rubidium, potassium, erbium and strontium compounds can be loaded in the crucible 308, heated and vaporized by the crucible heating furnace cylinder 310, and then enter a discharge area of the discharge chamber 314 through the steam distribution chamber 307; the heated filament 304 emits electrons to bombard the cathode 305, and the electrons emitted from the cathode 305 are accelerated by the electric field and confined by the magnetic field, pass through the electron window 306 to enter the discharge chamber 314 and collide with gas molecules of rubidium, potassium, erbium and strontium compounds to ionize and form arc discharge plasma; the arc discharge plasma is led out through the grounding electrode 301, the focusing electrode 302 and the lead-out slit electrode 303 to form an ion beam with certain energy and shape.
As shown in fig. 5, the performing 230 of the cold exercise of the ion source 110 further includes:
step 2302: starting a high-voltage power supply of the lead-out seam electrode 303, so that the voltage of the lead-out seam electrode 303 is gradually and slowly increased from 0, and the voltage is stopped to be increased until the ignition is serious; after the ignition is eliminated, boosting is carried out again, when the voltage of the leading-out seam electrode 303 is raised to 35kV, the voltage stays for 5 minutes, and then the voltage returns to 0V;
step 2304: starting the power supply of the focusing electrode 302, so that the voltage of the focusing electrode 302 is gradually and slowly increased from 0, and the voltage is stopped to be increased until the ignition is serious; after the ignition is eliminated, boosting again, when the voltage of the focusing electrode 302 is raised to-25 kV, staying for 5 minutes, and then returning to 0V;
step 2306: the voltage of the lead-out slit electrode 303 was raised to 30kV, and the voltage of the focusing electrode 302 was raised to-20 kV.
After the cold forging of the ion source 110 in step 230, burrs on the electrodes and other parts can be removed, thereby reducing sparking during normal operation of the ion source 110.
As shown in fig. 6, controlling the ion source 110 to form the ion beam 112 exiting into the vacuum chamber of the vacuum system 130 in step 250 further comprises:
step 2502: turning on power to the filament 304, turning on power to the arc chamber 315, and turning on power to the arc chamber heater 316;
step 2504: the heating current of the crucible heating furnace tube 310 is slowly increased, when the temperature of the crucible 308 is increased to a certain value, arc discharge is generated in the arc discharge chamber 315 to form arc discharge plasma, and the arc discharge plasma is led out through the grounding electrode 301, the focusing electrode 302 and the lead-out slit electrode 303 to form the ion beam 112 with certain energy and shape.
In step 270, the ion beam 112 exiting the ion source 110 is deflected by 180 ° by the transverse electric field formed by the magnetic field device, and then focused onto the receiving plane of the receiver 120.
The step 270 of using the magnetic field device to control the deflection and separation of the ion beam 112 and receiving the separated isotope ion beam by the receiver 120 includes:
when the discharge is stable and the ion beam current is large, each isotope is adjusted to the position corresponding to the closing-in bag in the receiver 120.
Adjusting each isotope to a position corresponding to a receiving pocket in the receiver 120, further comprising:
the voltage of the extraction slit electrode 303 is added to 30kV, and the stable working state is entered, the current of an electromagnet in a magnetic field device is adjusted, so that the ion beam 112 is deflected and hit a gear gate in the receiver 120;
fine tuning the current of the electromagnets in the magnetic field apparatus such that the ion beam 112 strikes the alignment bars on the shutter in the receiver 120;
after the detection is correct, the shutter of the receiver 120 is opened, so that the ion beam 112 enters the receiving pocket of the corresponding receiver 120.
Adjusting each isotope to a position corresponding to a receiving pocket in the receiver 120, further comprising:
the current of the panel and each receiving pocket in the receiver 120 is detected, and the current received by each receiving pocket is maximized and the current of the panel is minimized by fine-tuning the voltage of the lead-out slit electrode 303 or fine-tuning the current of the electromagnet in the magnetic field device. At this time, the position of the ion beam 112 is optimized.
Further, in an embodiment, before step 210, the isotope electromagnetic separation method further includes: dehydrating the separated raw material.
In order to prevent the influence of the vacuum degree of separation caused by a large amount of outgas during separation due to water contained in the separation raw material, dehydration of the separation raw material is required before separation of an isotope. For example, dehydrating the separation feedstock includes: heating the separated raw material in a heating furnace until the water in the separated raw material is evaporated to dryness. In one embodiment, the separation feedstock may be a chloride.
As described above, the invention provides a general isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements, isotopes of rubidium, potassium, erbium and strontium separated by the method have high abundance, the separation process scheme has universality, and the process operation is simple and easy to implement.
It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.
Claims (11)
1. An isotope electromagnetic separation method, comprising:
starting a vacuum system (130), a water cooling system (140) and a magnetic field power supply in a magnetic field device in the isotope electromagnetic separator (100);
activating a power supply of an ion source (110) in the isotope electromagnetic separator (100) and performing the ion source (110) cold exercise;
controlling the ion source (110) to form an ion beam (112) that exits into a vacuum chamber in a vacuum system (130) in the isotope electromagnetic separator (100);
controlling the ion beam (112) deflection, separation using the magnetic field device, and receiving the separated isotope ion beam using a receiver (120) in the isotope electromagnetic separator (100).
2. An isotope electromagnetic separation method according to claim 1, characterized in that: vacuum in the starting isotope electromagnetic separator (100)A magnetic field power supply in a system (130), a water cooling system (140) and a magnetic field apparatus, comprising: pumping the vacuum chamber to a vacuum of 3 × 10 with an oil diffusion pump-3Pa。
3. An isotope electromagnetic separation method according to claim 1, characterized in that: the activating a power source of an ion source (110) in the isotope electromagnetic separator (100) and performing the ion source (110) cold exercise comprises:
starting a power supply of an extraction slit electrode (303) in the ion source (110) to enable the voltage of the extraction slit electrode (303) to be gradually increased from 0, and stopping boosting when the ignition is serious; after the ignition is eliminated, boosting the voltage again, when the voltage of the lead-out seam electrode (303) is raised to 35kV, staying for 5 minutes, and then retreating to 0V;
starting a power supply of a focusing electrode (302) in the ion source (110) so that the voltage of the focusing electrode (302) is gradually increased from 0, and stopping boosting until the ignition is serious; after the ignition is eliminated, boosting again, when the voltage of the focusing electrode (302) is raised to-25 kV, staying for 5 minutes, and then returning to 0V;
the voltage of the lead-out slit electrode (303) was raised to 30kV, and the voltage of the focusing electrode (302) was raised to-20 kV.
4. An isotope electromagnetic separation method according to claim 3, characterized in that: the controlling the ion source (110) to form an ion beam (112) exiting into a vacuum chamber in a vacuum system (130) in the isotope electromagnetic separator (100), comprising:
turning on power to a filament (304) in the ion source (110), turning on power to an arc discharge chamber (315) in the ion source (110), and turning on power to an arc chamber heater (316) in the ion source (110);
and gradually increasing the heating current of a crucible heating furnace cylinder (310) in the ion source (110), generating arc discharge in the arc discharge chamber (315) to form arc discharge plasma after the temperature of a crucible (308) in the ion source (110) rises to a certain value, and leading out the arc discharge plasma through a grounding electrode (301), a focusing electrode (302) and an extraction slit electrode (303) in the ion source (110) to form an ion beam (112) with certain energy and shape.
5. The isotope electromagnetic separation method according to claim 4, characterized in that: the controlling the deflection and separation of the ion beam (112) by the magnetic field device comprises:
and adjusting the current of an electromagnet in the magnetic field device.
6. An isotope electromagnetic separation method according to claim 5, characterized in that: the controlling the ion beam (112) deflection, separation using the magnetic field device, and receiving the separated isotope ion beam using a receiver (120) in the isotope electromagnetic separator (100), further comprising:
when the discharge in the arc discharge chamber (315) is stable and the ion beam current is large, the isotopes are adjusted to the positions corresponding to the receiving pockets in the receiver (120).
7. The isotope electromagnetic separation method according to claim 6, characterized in that: the adjusting each isotope to a position corresponding to a receiving pocket in the receiver (120), further comprising:
adding the voltage of the extraction slit electrode (303) to 30kV, entering a stable working state, and adjusting the current of an electromagnet in the magnetic field device to deflect the ion beam (112) to hit a shutter in the receiver (120);
fine-tuning the current of an electromagnet in the magnetic field adjusting device to enable the ion beam (112) to strike an alignment bar on the shutter;
after the detection is correct, the shutter is opened, so that the ion beams (112) enter the receiving pockets corresponding to the ion beams respectively.
8. An isotope electromagnetic separation method according to claim 7, characterized in that: the adjusting each isotope to a position corresponding to a receiving pocket in the receiver (120), further comprising:
and detecting the current of the panel and each receiving pocket in the receiver (120), and finely adjusting the voltage of the lead-out seam electrode (303) or the current of an electromagnet in the magnetic field device, so that the receiving current of each receiving pocket is maximized and the current of the panel is minimized.
9. An isotopic electromagnetic separation method according to any one of claims 1 to 8, wherein: before starting a vacuum system (130), a water cooling system (140) and a magnetic field power supply in a magnetic field device in the isotope electromagnetic separator (100), the isotope electromagnetic separation method further comprises: dehydrating the separated raw material.
10. An isotope electromagnetic separation method according to claim 9, characterized in that: the dewatering of the separation raw material comprises: heating the separated raw material in a heating furnace until the moisture in the separated raw material is evaporated.
11. An isotope electromagnetic separation method according to claim 10, characterized in that: the separation raw material is chloride.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420530A (en) * | 2021-12-17 | 2022-04-29 | 中国原子能科学研究院 | One-chamber multi-source structure of isotope electromagnetic separator |
| CN115845609A (en) * | 2023-02-20 | 2023-03-28 | 北京核力同创科技有限公司 | Method and device for separating lithium isotopes, electronic equipment and storage medium |
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| CN114420530A (en) * | 2021-12-17 | 2022-04-29 | 中国原子能科学研究院 | One-chamber multi-source structure of isotope electromagnetic separator |
| CN115845609A (en) * | 2023-02-20 | 2023-03-28 | 北京核力同创科技有限公司 | Method and device for separating lithium isotopes, electronic equipment and storage medium |
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