CN112808004B - Isotope electromagnetic separation method - Google Patents
Isotope electromagnetic separation method Download PDFInfo
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- CN112808004B CN112808004B CN202011640254.1A CN202011640254A CN112808004B CN 112808004 B CN112808004 B CN 112808004B CN 202011640254 A CN202011640254 A CN 202011640254A CN 112808004 B CN112808004 B CN 112808004B
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- ion beam
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- 238000000926 separation method Methods 0.000 title claims abstract description 52
- 150000002500 ions Chemical class 0.000 claims abstract description 53
- 238000010884 ion-beam technique Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000010891 electric arc Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 4
- 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
- 230000004913 activation 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 13
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract description 13
- 238000011112 process operation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000011162 core material Substances 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
- 238000010273 cold forging Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- UYAHIZSMUZPPFV-BJUDXGSMSA-N erbium-166 Chemical compound [166Er] UYAHIZSMUZPPFV-BJUDXGSMSA-N 0.000 description 2
- 230000000155 isotopic effect Effects 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
- 239000000498 cooling water Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005372 isotope separation Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000003438 strontium compounds Chemical class 0.000 description 1
Classifications
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Particle Accelerators (AREA)
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 cold exercise of the ion source; controlling the ion source to form an ion beam which is emitted to a vacuum chamber in a vacuum system in the isotope electromagnetic separator; the magnetic field device is used for controlling the deflection and separation of the ion beam, and a receiver in the isotope electromagnetic separator is used for receiving the separated isotope ion beam. The technical scheme of the invention provides a general isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements, the rubidium, potassium, erbium and strontium isotopes separated by the method have high abundance, 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 high-abundance isotope has important application in the fields of national defense, military industry, radiopharmaceuticals and the like. For example, high abundance rubidium 87 isotopes are the core material of a satellite-borne rubidium atomic clock, the abundance of which directly affects the stability of the rubidium atomic clock. The high-sensitivity magnetometer has important application in the field of national defense, can be equipped on a counterdiving machine and is used for accurately detecting and positioning a deep sea submarine. Rubidium 87 and potassium 41 isotopes are the core materials of high sensitivity magnetometers, and their abundance determines the distance of the countersubmarines from detection. The erbium 166 isotope is a core material for developing advanced detectors, and the abundance of the erbium 166 isotope directly affects the performance of the detector. Strontium 88 is the core precursor material of 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 cold exercise of the ion source; controlling the ion source to form an ion beam which is emitted to a vacuum chamber in a vacuum system in the isotope electromagnetic separator; the magnetic field device is used for controlling the deflection and separation of the ion beam, and a receiver in the isotope electromagnetic separator is used for receiving the separated isotope ion beam.
Further, the magnetic field power supply in the vacuum system, the water cooling system and the magnetic field device in the isotope electromagnetic separator comprises: the vacuum in the vacuum chamber is pumped to 3 multiplied by 10 by adopting an oil diffusion pump -3 Pa。
Further, the starting the power supply of the ion source in the isotope electromagnetic separator and the cold forging of the ion source comprise the following steps: starting a power supply of an extraction slit electrode in the ion source, so that the voltage of the extraction slit electrode is gradually increased from 0 until the voltage is stopped being boosted when the ignition is serious; boosting again after the ignition is eliminated, and stopping for 5 minutes when the voltage of the lead-out seam electrode rises to 35kV, and then returning to 0 volt; 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 until the voltage is stopped being increased when the ignition is serious; boosting again after the ignition is eliminated, and stopping for 5 minutes when the voltage of the focusing electrode rises to-25 kV, and then returning to 0 volt; and raising the voltage of the lead-out 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 exiting into a vacuum chamber in a vacuum system in the isotope electromagnetic separator includes: starting a power supply of a filament in the ion source, starting a power supply of an arc discharge chamber in the ion source, and starting a power supply of an arc chamber heater in the ion source; and gradually increasing the heating current of a crucible heating furnace barrel in the ion source, and 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, wherein the arc discharge plasma is led out 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 deflection and separation of the ion beam by the magnetic field device and receiving the separated isotope ion beam by a receiver in the isotope electromagnetic separator further comprises: when the discharge in the arc discharge chamber is stable and the extracted ion beam current is large, each isotope is adjusted to the corresponding position of the receiving pocket in the receiver.
Further, the adjusting each isotope to a position corresponding to a receiving pocket in the receiver further includes: the voltage of the lead-out slit electrode is added to 30kV, and the lead-out slit electrode enters a stable working state, and the current of an electromagnet in the magnetic field device is adjusted to enable the ion beam to deflect and strike a shutter in the receiver; finely adjusting the current of an electromagnet in the magnetic field adjusting device so that the ion beam strikes an alignment strip on the shutter; after detection, the shutter is opened so that the ion beams enter the corresponding receiving pockets.
Further, the adjusting each isotope to a position corresponding to a receiving pocket in the receiver further includes: detecting the current of the panel and each receiving pocket in the receiver, and trimming the voltage of the lead-out slit electrode or the current of the electromagnet in the magnetic field device so that the receiving current of each receiving pocket reaches the maximum and the panel current is minimum.
Further, before the starting of 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 separated material is dehydrated.
Further, the dewatering of the separated feed stock comprises: heating the separated raw material in a heating furnace until the moisture in the separated raw material is evaporated to dryness.
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, the rubidium, potassium, erbium and strontium isotopes separated by the method have high abundance, the separation process scheme has universality, and the process operation is simple and easy.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, which provide a thorough understanding of the present invention.
FIG. 1 is a schematic diagram of an isotope electromagnetic separation process employing an isotope electromagnetic separator in accordance with some embodiments of the present invention;
FIG. 2 is a flow diagram of an isotope electromagnetic separation method in accordance with some embodiments of the present invention;
FIG. 3 is a schematic diagram of an ion source used in an isotope electromagnetic separation method in accordance with some embodiments of the present invention;
FIG. 4 is a schematic view of another angle of an ion source used in an isotope electromagnetic separation method in accordance with some embodiments of the present invention;
FIG. 5 is a schematic flow chart of an ion source cold exercise performed in an isotope electromagnetic separation method according to some embodiments of the present invention;
fig. 6 is a schematic flow chart of a method for controlling an ion source to form an ion beam exiting a vacuum chamber in a vacuum system in an electromagnetic separation method for isotopes according to some embodiments of the invention.
It should be noted that the drawings are not necessarily to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.
Reference numerals illustrate:
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 slit electrode; 304. a filament; 305. a cathode; 306. an electronic window; 307. a steam distribution chamber; 308. a crucible; 309. a heat reflecting screen; 310. a crucible heating furnace cylinder; 311. a third lead-out slit; 312. a second lead-out slit; 313. a first extraction slit; 314. a discharge cell; 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 clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are one embodiment, but not all embodiments, of the present invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. If, throughout, reference is made to "first," "second," etc., the description of "first," "second," etc., is used merely for distinguishing between similar objects and not for understanding as indicating or implying a relative importance, order, or implicitly indicating the number of technical features indicated, it being understood that the data of "first," "second," etc., may be interchanged where appropriate. If "and/or" is present throughout, it is meant to include three side-by-side schemes, for example, "A and/or B" including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. Furthermore, for ease of description, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein merely to describe the spatial positional relationship of one device or feature to another device 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.
In order to obtain high abundance of rubidium, potassium, erbium and strontium elements, some embodiments of the present invention provide a versatile isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements.
The isotope electromagnetic separation method realizes isotope separation by utilizing ions with the same energy and different masses to rotate at different radii in a transverse magnetic field. FIG. 1 is a schematic diagram of an isotope electromagnetic separation method employing an isotope electromagnetic separator in accordance with some embodiments of the present 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 apparatus (not shown). In the ion source 110, compounds of rubidium, potassium, erbium, and strontium are heated, vaporized, and ionized to form a plasma, and are emitted from the ion source 110 to form an ion beam 112 having a certain energy and shape. Then, the ion beam 112 is deflected, mass separated and angle focused by the magnetic field device under the action of the transverse magnetic field formed in the vacuum system 130, and then received by the receiver 120 to complete the separation of isotopes, so that multiple 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 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 steps of:
step 210: starting a magnetic field power supply in the vacuum system 130, the water cooling system and the magnetic field device;
step 230: activating the power supply of the ion source 110 and performing cold exercises 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 isotopic ion beam is received by a receiver 120.
Wherein, in step 210, a vacuum system may be appliedThe vacuum in the vacuum chamber in system 130 is pumped to 3 x 10 -3 Pa. In one embodiment, vacuum system 130 includes an oil diffusion pump coupled to the vacuum chamber. The oil diffusion pump may be a large oil diffusion pump of 20000 liters/sec. In step 210, the vacuum in the vacuum chamber may be pumped to 3×10 using an oil diffusion pump -3 Pa。
In addition, after the water cooling system is started, cooling water may be supplied to the ion source 110, the receiver 120, the vacuum chamber liner, the magnetic field power supply, etc. in step 210 to ensure that the ion source 110, the receiver 120, the vacuum chamber liner, the magnetic field power supply, etc. operate in a normal temperature range.
In addition, in step 210, a transverse magnetic field may be formed in the vacuum chamber after the magnetic field power supply in the magnetic field device is activated. The magnetic field means may comprise an electromagnet, the field strength of the transverse magnetic field being controllable by adjusting the current in the electromagnet.
In step 230, burrs on the electrode or the like can be removed by performing cold exercises on the ion source 110, 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 comprises: a ground electrode 301, a focus 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 reflecting screen 309, a crucible heating furnace 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.
In use, rubidium, potassium, erbium and strontium compounds can be placed in crucible 308 and heated to vaporize by crucible heating furnace 310 and then enter the discharge region of discharge chamber 314 through vapor distribution chamber 307; the heated filament 304 emits electrons to bombard the cathode 305, the electrons emitted by the cathode 305 are accelerated by the electric field and confined by the magnetic field, enter the discharge chamber 314 through the electron window 306 and collide with gas molecules of compounds of rubidium, potassium, erbium and strontium to ionize and form an 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, performing the cold exercise of the ion source 110 in step 230 further includes:
step 2302: starting a high-voltage power supply of the lead-out slit electrode 303, so that the voltage of the lead-out slit electrode 303 gradually and slowly increases from 0, and stopping boosting until the ignition is serious; after the ignition is eliminated, boosting again, and when the voltage of the lead-out slit electrode 303 rises to 35kV, staying for 5 minutes and then returning to 0 volt;
step 2304: starting the power supply of the focusing electrode 302, so that the voltage of the focusing electrode 302 gradually and slowly increases from 0 until the voltage boosting is stopped when the ignition is serious; boosting again after the ignition is eliminated, and when the voltage of the focusing electrode 302 rises to-25 kV, staying for 5 minutes, and then returning to 0 volt;
step 2306: the voltage of the 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 electrode and other components can be removed, thereby reducing the sparking during normal operation of the ion source 110.
As shown in fig. 6, the control ion source 110 in step 250 forms an ion beam 112 that exits into a vacuum chamber in the vacuum system 130, further comprising:
step 2502: turning on the power to the filament 304, turning on the power to the arc chamber 315, and turning on the power to the arc chamber heater 316;
step 2504: the heating current of the crucible heating furnace barrel 310 is slowly raised, when the temperature of the crucible 308 is raised 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 180 ° by the transverse electric field formed by the magnetic field device and then focused on the receiving plane of the receiver 120.
The deflection, separation, and reception of the separated isotopic ion beam by the receiver 120 of the ion beam 112 is controlled by the magnetic field device in step 270, including:
when the discharge is stable and the extracted ion beam current is large, each isotope is adjusted to the position corresponding to the closing-in bag in the receiving receiver 120.
Adjusting each isotope to a corresponding location of a receiving pocket in the receiver 120 further comprises:
applying a voltage of 30kV to the slit electrode 303, entering a stable working state, and adjusting current of an electromagnet in the magnetic field device to deflect the ion beam 112 to strike a middle gate of the receiver 120;
fine-tuning the current of the electromagnet in the magnetic field device so that the ion beam 112 impinges on an alignment bar on the shutter in the receiver 120;
after detection, the shutters in the receivers 120 are opened so that the ion beams 112 enter the receiving pockets in the respective receivers 120.
Adjusting each isotope to a corresponding location in the receiver 120 for a receiving pocket further comprises:
the current of the panel and each receiving pocket in the receiver 120 is detected, and the receiving current of each receiving pocket is maximized and the panel current is minimized by fine-tuning the voltage of the lead 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 optimal.
Furthermore, in an embodiment, prior to step 210, the isotope electromagnetic separation method further comprises: the separated material is dehydrated.
In order to prevent the separation of the separation material from the vacuum level, which would be affected by the large amount of outgas in the separation process due to the water content in the separation material, dehydration of the separation material is performed before the separation of one isotope. For example, dewatering the separated feed material 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 chloride.
As described above, the invention provides a general isotope electromagnetic separation method for rubidium, potassium, erbium and strontium elements, the rubidium, potassium, erbium and strontium isotopes separated by the method have high abundance, the separation process scheme has universality, and the process operation is simple and easy.
It should also be noted that, in the embodiments of the present invention, the features of the embodiments of the present invention and the features of the embodiments of the present invention may be combined with each other to obtain new embodiments without conflict.
The present invention is not limited to the above embodiments, but the scope of the invention is defined by the claims.
Claims (5)
1. An electromagnetic separation method of isotopes, comprising:
starting a vacuum system (130), a water cooling system (140) and a magnetic field power supply in the 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 cold exercise of the ion source (110);
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);
controlling deflection, separation of the ion beam (112) with the magnetic field arrangement and receiving the separated isotope ion beam with a receiver (120) in the isotope electromagnetic separator (100);
the activating a power supply of an ion source (110) in the isotope electromagnetic separator (100) and performing a cold exercise of the ion source (110), comprising:
starting a power supply of an extraction slit electrode (303) in the ion source (110) so that the voltage of the extraction slit electrode (303) is gradually increased from 0 until the voltage is stopped from being increased when the ignition is serious; boosting again after the ignition is eliminated, and when the voltage of the lead-out seam electrode (303) rises to 35kV, staying for 5 minutes and then returning to 0 volt;
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 until the voltage boosting is stopped when the ignition is serious; boosting again after the ignition is eliminated, and when the voltage of the focusing electrode (302) rises to-25 kV, staying for 5 minutes and then returning to 0 volt;
raising the voltage of the lead-out slit electrode (303) to 30kV, and raising the voltage of the focusing electrode (302) to-20 kV;
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 a power supply to a filament (304) in the ion source (110), turning on a power supply to an arc discharge chamber (315) in the ion source (110), and turning on a power supply to an arc chamber heater (316) in the ion source (110);
heating current of a crucible heating furnace cylinder (310) in the ion source (110) is gradually increased, after the temperature of a crucible (308) in the ion source (110) 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 a grounding electrode (301), a focusing electrode (302) and a lead-out slit electrode (303) in the ion source (110) to form an ion beam (112) with certain energy and shape;
the method for controlling deflection and separation of the ion beam (112) by using the magnetic field device comprises the following steps:
adjusting the current of an electromagnet in the magnetic field device;
the controlling of the deflection, separation of the ion beam (112) by the magnetic field device and the receiving of the separated isotope ion beam by a receiver (120) in the isotope electromagnetic separator (100) further comprises:
when the discharge in the arc discharge chamber (315) is stable and the extracted ion beam current is large, adjusting each isotope to a position corresponding to a receiving pocket in the receiver (120);
the adjusting of each isotope to a corresponding location of a receiving pocket in the receiver (120) further comprises:
applying a voltage of the seam extraction electrode (303) to 30kV, entering a stable working state, and adjusting current of an electromagnet in the magnetic field device to deflect the ion beam (112) to strike a shutter in the receiver (120);
trimming the current of the electromagnet in the magnetic field device so that the ion beam (112) impinges on an alignment bar on the shutter;
after detection, opening the shutter so that the ion beams (112) enter the respective receiving pockets;
the adjusting of each isotope to a position corresponding to a receiving pocket in the receiver (120) further comprises:
detecting the current of the panel and each receiving pocket in the receiver (120) and trimming the voltage of the lead-out slit electrode (303) or trimming the current of the electromagnet in the magnetic field device so that the receiving current of each receiving pocket is maximized and the panel current is minimized.
2. The method for electromagnetic separation of isotopes of claim 1, wherein: a vacuum system (130), a water cooling system (140) in the startup isotope electromagnetic separator (100) and a magnetic field power supply in a magnetic field device, comprising: the vacuum in the vacuum chamber is pumped to 3 multiplied by 10 by adopting an oil diffusion pump -3 Pa。
3. The isotope electromagnetic separation method according to claim 1 or 2, characterized in that: prior to the activation of the vacuum system (130), the water cooling system (140) and the magnetic field power supply in the magnetic field device in the isotope electromagnetic separator (100), the isotope electromagnetic separation method further comprises: the separated material is dehydrated.
4. The method for electromagnetic separation of isotopes of claim 3, wherein: the dewatering of the separated feed stock comprises: heating the separated raw material in a heating furnace until the moisture in the separated raw material is evaporated to dryness.
5. The method for electromagnetic separation of isotopes of claim 4, wherein: the separation raw material is chloride.
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| CN114053872A (en) * | 2021-12-06 | 2022-02-18 | 中国原子能科学研究院 | Isotope electromagnetic separation system |
| CN114420530B (en) * | 2021-12-17 | 2024-10-18 | 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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