CN114694916B - Six-pole permanent magnet for high-current high-charge state ion source and preparation method thereof - Google Patents
Six-pole permanent magnet for high-current high-charge state ion source and preparation method thereof Download PDFInfo
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- CN114694916B CN114694916B CN202210484734.6A CN202210484734A CN114694916B CN 114694916 B CN114694916 B CN 114694916B CN 202210484734 A CN202210484734 A CN 202210484734A CN 114694916 B CN114694916 B CN 114694916B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/02—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma
- H05H1/10—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma using externally-applied magnetic fields only, e.g. Q-machines, Yin-Yang, base-ball
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Abstract
The invention relates to a six-pole permanent magnet for a high-current high-charge state ion source, which is cylindrical and comprises a neodymium-iron-boron magnetic block area, a fixed shielding layer and a radiation shielding layer which are coaxially sleeved in sequence from inside to outside. The cylindrical six-pole permanent magnet generates a radial magnetic field higher than 1.4T on the inner wall, generates a higher radial magnetic field under a limited size, has no demagnetizing risk per se, and has no demagnetizing risk under a stronger axial magnetic field.
Description
Technical Field
The invention belongs to the field of magnetic confinement, and particularly relates to a hexapole permanent magnet for a strong-current high-charge state ion source and a preparation method thereof.
Background
The ECR (Electron Cyclotron Resonance) ion source is characterized in that a minimum B magnetic field formed by superposing an axial magnetic mirror field and a radial hexapole magnetic field is utilized to restrain plasma, electrons are heated by microwaves fed into a specific frequency f, then neutral atoms are peeled step by high-energy electrons, high-charge state ions are generated, the intensity of an extracted high-charge state ion beam is increased along with the frequency f of the microwaves, and the axial magnetic mirror field and the radial hexapole magnetic field are required to reach a certain magnetic field intensity. The radial hexapole magnetic field is generated by a coil or a permanent magnet, the radial magnetic field strength generated by a conventional coil is limited, the requirement of a strong current high charge state ECR ion source is not met, the superconducting coil can generate very high magnetic field strength, the superconducting coil and the axial superconducting coil form a full superconducting ECR ion source, the structure is complex, the manufacturing difficulty is high, and in addition, a little of tiny sliding occurs in the operation, the quench is caused.
The radial magnetic field generated by the permanent magnet can meet the requirement that the ECR ion source with high charge state operates below 18GHz frequency, and hardly meets the requirement that the ECR ion source with high charge state operates in the frequency range of 18-24GHz, because the radial magnetic field generated by the permanent magnet is limited by space size, the traditional Halbach structure cannot break through, and the demagnetizing risk exists in the strong axial magnetic mirror field.
The high-current high-charge ECR ion source needs a high axial magnetic mirror field and a high radial hexapole magnetic field, the outer diameter size of a permanent magnet generating the hexapole magnetic field is limited, the radial magnetic field can be improved due to the large outer diameter size, but manufacturing difficulty and risk are increased, and meanwhile manufacturing difficulty of an axial coil is improved.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a hexapole permanent magnet for a high-current high-charge state ion source that generates a high radial magnetic field with limited dimensions, that is free of demagnetization risks by itself, and that is free of demagnetization risks under a strong axial magnetic field. The invention further aims to provide a preparation method of the hexapole permanent magnet for the high-current high-charge state.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a six-pole permanent magnet for a high-current high-charge state ion source, which is cylindrical and comprises a neodymium-iron-boron magnetic block area, a fixed shielding layer and a radiation shielding layer, wherein the neodymium-iron-boron magnetic block area, the fixed shielding layer and the radiation shielding layer are coaxially sleeved in sequence from inside to outside.
Further, neodymium iron boron magnetism piece district is divided into the multistage along axial direction equally, and every section all includes a plurality of fan-shaped magnet piece, a plurality of fan-shaped magnet piece is connected gradually along circumference direction and is formed into the annular, and wherein 6 fan-shaped magnet piece is utmost point head magnet piece, and 6 utmost point head magnet piece distributes along circumference array, and 6 utmost point head magnet piece forms into 3 groups, and every group utmost point head magnet piece all includes N utmost point magnet piece and S utmost point magnet piece, and same group N utmost point magnet piece and S utmost point magnet piece set up relatively.
Further, the fan-shaped magnetic blocks are formed to comprise two layers, and each fan-shaped magnetic block is formed by fixedly bonding an inner layer of fan-shaped magnetic block and a corresponding outer layer of fan-shaped magnetic block.
Further, the angle of each sector magnetic block is 10 degrees.
Further, the pole head magnetic block comprises an outer layer pole head magnetic block and an inner layer pole head magnetic block, the angle of the outer layer pole head magnetic block is 10 degrees, and the inner layer pole head magnetic block is formed by splicing two 5-degree fan-shaped pole head magnetic blocks.
Further, 6 of the inner-layer fan-shaped magnetic blocks are SH-shaped neodymium-iron-boron magnetic blocks, 6 SH-shaped neodymium-iron-boron magnetic blocks are arranged along a circumferential array, and the interval between each SH-shaped neodymium-iron-boron magnetic block and the pole head magnetic blocks on two adjacent sides is the same.
Further, the outer layer pole head magnetic blocks are AH type neodymium iron boron magnetic blocks, and 6 AH type neodymium iron boron magnetic blocks are arranged along the circumferential array.
Further, the included angle of the magnetizing directions of the pole head magnet blocks is 40 degrees, and the included angle of the magnetizing directions of two adjacent fan-shaped magnet blocks is 60 degrees.
Further, the permanent magnet generator further comprises two cover plates, and the cover plates are fixedly arranged at two ends of the cylindrical six-pole permanent magnet.
Further, the fixed shielding layer is made of soft iron materials and has a thickness of 9mm.
Further, the radiation shielding layer is made of lead-based radiation-proof materials, and the thickness of the radiation shielding layer is 1mm.
On the other hand, the invention also provides a preparation method of the hexapole permanent magnet for the high-current high-charge state ion source, which comprises the following steps:
magnetizing the cut sector blocks according to the magnetization direction of the cuboid blank neodymium iron boron;
bonding two 5-degree fan-shaped pole head magnetic blocks to form an inner-layer pole head magnetic block;
bonding the inner layer pole head magnetic blocks and 10-degree inner layer sector magnetic blocks on two sides to form first magnetic blocks;
bonding the outer layer 3 blocks and the outer layer 10-degree fan-shaped magnetic blocks into a whole to form a second magnetic block;
bonding the first magnetic block and the second magnetic block into a whole to form a third sector magnetic block;
bonding the SH-type neodymium-iron-boron magnet blocks and the 10-degree inner-layer sector magnet blocks positioned on two sides to form a fourth magnet block;
bonding the outer layer sector magnetic blocks of the outer layer 3 blocks with the angle of 10 degrees into a whole to form a fifth magnetic block;
bonding the fourth magnetic block and the fifth magnetic block into a whole to form a sixth sector magnetic block;
sequentially staggering and bonding a plurality of third sector magnetic blocks and sixth sector magnetic blocks along a circumference square to form cylindrical neodymium iron boron magnetic blocks;
sequentially paving a plurality of sections of the NdFeB magnet blocks along the axial direction to form an NdFeB magnet block area;
the fixing shielding layer and the radiation shielding layer are sequentially sleeved on the outer side of the neodymium-iron-boron magnetic block area, and two ends of the fixing shielding layer and the radiation shielding layer are sealed and fixed through the cover plate.
Due to the adoption of the technical scheme, the invention has the following advantages:
the six-pole permanent magnet structure is cylindrical, the length of the neodymium-iron-boron magnet block area, namely the cylindrical shape length is determined according to the axial magnetic field length of the ECR ion source, and the six-pole permanent magnet structure is formed by multiple sections in the manufacturing process, so that the manufacturing difficulty is reduced; the cylindrical six-pole permanent magnet generates a radial magnetic field higher than 1.4T on the inner wall, generates a higher radial magnetic field under a limited size, has no demagnetizing risk per se, and has no demagnetizing risk under a stronger axial magnetic field.
Each segment of neodymium iron boron magnet block is divided into 36 blocks of 10-degree fan-shaped structures, the 36 blocks of 10-degree fan-shaped magnet blocks are formed to comprise an inner layer and an outer layer, the N/S10-degree fan-shaped inner layer pole head is divided into 2 blocks of 5-degree fan-shaped inner layer pole head, manufacturing difficulty is reduced, and space for optimizing the fan-shaped magnetizing direction and a range for selecting material models are provided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like parts are designated with like reference numerals throughout the drawings. In the drawings:
FIG. 1 is an axial view of a hexapole permanent magnet for a high current high charge state;
FIG. 2 is a cross-sectional view of a hexapole permanent magnet for a high current high charge state;
FIG. 3 is a schematic diagram of the structure of the demagnetizing risk region due to the self-synthesized field;
FIG. 4 is a schematic diagram of the structure of the demagnetizing risk region caused by the axial magnetic mirror field;
the various references in the drawings are as follows:
1-SH type neodymium iron boron magnet block; 2-AH type neodymium iron boron magnet; 3-sector magnetic blocks; 4-pole head magnetic blocks; 5-fixing the shielding layer; 6-a radiation shielding layer; 7-cover plate and 8-NdFeB magnetic block area.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The embodiment of the invention provides a six-pole permanent magnet for a high-current high-charge state ion source, which is characterized in that the six-pole permanent magnet is cylindrical, and the cylindrical six-pole permanent magnet comprises a neodymium-iron-boron magnetic block area 8, a fixed shielding layer 5 and a radiation shielding layer 6 which are coaxially sleeved in sequence from inside to outside. The cylindrical six-pole permanent magnet generates a radial magnetic field higher than 1.4T on the inner wall, generates a higher radial magnetic field under a limited size, has no demagnetizing risk per se, and has no demagnetizing risk under a stronger axial magnetic field.
As shown in fig. 1, the hexapole permanent magnet is cylindrical, and the cylindrical hexapole permanent magnet comprises a neodymium-iron-boron magnetic block area 8, a fixed shielding layer 5 and a radiation shielding layer 6 which are coaxially sleeved in sequence from inside to outside, so that the hexapole permanent magnet is of a multi-layer structure. The outside of the NdFeB magnet block area 8 is fixed in contact with the fixed shielding layer 5, and the radiation shielding layer 6 covers the outer surface of the fixed shielding layer 5. The six-pole permanent magnet further comprises two end covers 7, and the two end covers 7 are fixedly arranged at two ends of the six-pole permanent magnet respectively.
The neodymium iron boron magnetism piece district 8 equally divide into the multistage along axial direction, and each section all includes 36 fan-shaped magnetism pieces, a plurality of fan-shaped magnetism piece 3 is connected gradually along circumference direction and is formed into the annular, and wherein 6 fan-shaped magnetism piece 3 is utmost point head magnetism piece, and 6 utmost point head magnetism piece distributes along circumference array, and 6 utmost point head magnetism piece forms into 3 groups, and every group utmost point head magnetism piece all includes N utmost point magnetism piece and S utmost point magnetism piece, and same group N utmost point magnetism piece and S utmost point magnetism piece set up relatively. The radial magnetic field is formed by arranging the N-pole magnetic blocks and the S-pole magnetic blocks of the passing group oppositely.
In order to further improve the radial magnetic field intensity, the fan-shaped magnetic blocks 3 are formed to comprise two layers, and each fan-shaped magnetic block is formed by fixedly bonding an inner layer of fan-shaped magnetic blocks and a corresponding outer layer of fan-shaped magnetic blocks.
Preferably, the angle of each sector magnetic block 3 is 10 DEG
In order to further improve the strength of the magnetic field, the pole head magnetic block 4 comprises an outer layer pole head magnetic block and an inner layer pole head magnetic block, wherein the angle of the outer layer pole head magnetic block is 10 degrees, and the inner layer pole head magnetic block is formed by splicing two 5-degree fan-shaped pole head magnetic blocks.
6 among the fan-shaped magnetic blocks of inlayer are SH type neodymium iron boron magnetism piece 1,6 SH type neodymium iron boron magnetism piece 1 sets up along circumference array, every SH type neodymium iron boron magnetism piece 1 with the interval between the utmost point head magnetic block 4 of adjacent both sides is the same. Preferably, in the present invention, each SH-type neodymium-iron-boron magnet 1, the sector-shaped magnet 3 on two adjacent sides, and the corresponding outer sector-shaped magnet are bonded to form a demagnetizing risk area caused by a self-synthesized field. According to the invention, the demagnetizing risk of the inner layer of the magnet due to the self-synthesized field can be reduced by arranging the SH type neodymium iron boron magnet block 1. The fan-shaped modules at two adjacent sides are M-shaped neodymium iron boron magnetic blocks.
The outer layer pole head magnetic blocks are AH type neodymium iron boron magnetic blocks 2 and 6, and the AH type neodymium iron boron magnetic blocks 2 are arranged along a circumferential array. Each AH type neodymium iron boron magnet block 2, the sector magnet blocks 3 on two adjacent sides and the corresponding inner layer pole head magnet block form an axial magnetic mirror field to lead to a demagnetizing risk area. According to the invention, through the arrangement of the AH type neodymium iron boron magnet block 2, the demagnetizing risk caused by the axial magnetic mirror field at the outer layer of the magnet can be reduced.
The included angle of the magnetizing directions of the pole head magnet blocks 4 is 40 degrees, and the included angle of the magnetizing directions of two fan-shaped magnet blocks adjacent to the pole head magnet blocks 4 is 60 degrees.
The fixed shielding layer 5 is preferably made of a soft iron type high-permeability application grade material, and has a thickness of about 9mm.
The radiation shielding layer 6 is preferably made of an ionizing radiation material with high lead penetration resistance, and has a thickness of about 1mm.
The invention also provides a preparation method of the hexapole permanent magnet for the high-current high-charge state ion source, which comprises the following steps:
magnetizing the cut sector blocks according to the magnetization direction of the cuboid blank NdFeB
Bonding two inner layer sector pole head magnetic blocks with the angle of 5 degrees to form an inner layer pole head magnetic block with the angle of 10 degrees;
bonding the inner layer pole head magnetic blocks and 10-degree inner layer sector magnetic blocks on two sides to form first magnetic blocks;
bonding the outer layer 3 blocks and the outer layer 10-degree fan-shaped magnetic blocks into a whole to form a second magnetic block;
bonding the first magnetic block and the second magnetic block into a whole to form a third magnetic block sector magnetic block; the third sector magnetic block is a demagnetizing risk group caused by the self-synthesized field.
Bonding the SH-type neodymium-iron-boron magnet 1 and the 10-degree inner-layer sector magnet positioned on two sides to form a fourth magnet;
bonding the outer layer sector magnetic blocks of the outer layer 3 blocks with the angle of 10 degrees into a whole to form a fifth magnetic block;
bonding the fourth magnetic block and the fifth magnetic block into a whole to form a sixth fan-shaped magnetic block, wherein the sixth fan-shaped magnetic block is an axial magnetic mirror field to cause a demagnetizing risk area;
sequentially staggering and bonding a plurality of third sector magnetic blocks and sixth sector magnetic blocks along a circumference square to form cylindrical neodymium iron boron magnetic blocks;
sequentially paving a plurality of sections of the NdFeB magnet blocks along the axial direction to form an NdFeB magnet block area 8;
the fixing shielding layer 5 and the radiation shielding layer 6 are sequentially sleeved on the outer side of the neodymium-iron-boron magnet block area 8, and two ends of the fixing shielding layer and the radiation shielding layer are sealed and fixed through the cover plate 7.
The cylindrical six-pole permanent magnet of the six-pole permanent magnet provided by the invention generates a radial magnetic field higher than 1.4T on the inner wall, generates a higher radial magnetic field under a limited size, has no demagnetizing risk, and has no demagnetizing risk under a stronger axial magnetic field.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The six-pole permanent magnet for the high-current high-charge state ion source is characterized by being cylindrical, and comprises a neodymium-iron-boron magnetic block area, a fixed shielding layer and a radiation shielding layer which are coaxially sleeved in sequence from inside to outside;
the neodymium iron boron magnetic block area is equally divided into a plurality of sections along the axial direction, each section comprises a plurality of sector magnetic blocks, the plurality of sector magnetic blocks are sequentially connected along the circumferential direction to form a ring shape, 6 of the sector magnetic blocks are pole head magnetic blocks, 6 of the pole head magnetic blocks are distributed along the circumferential array, 6 of the pole head magnetic blocks form 3 groups, each group of the pole head magnetic blocks comprises an N pole magnetic block and an S pole magnetic block, and the N pole magnetic blocks and the S pole magnetic blocks of the same group are oppositely arranged;
the pole head magnetic blocks comprise an outer layer pole head magnetic block and an inner layer pole head magnetic block, the angle of the outer layer pole head magnetic block is 10 degrees, and the inner layer pole head magnetic block is formed by splicing two 5-degree fan-shaped pole head magnetic blocks;
the fixed shielding layer is made of soft iron materials;
the radiation shielding layer is made of lead radiation-proof materials.
2. The hexapole permanent magnet for a high current, high charge state ion source of claim 1 wherein the sector magnets are formed to include two layers, each of the sector magnets being fixedly bonded by an inner sector magnet and a corresponding outer sector magnet.
3. The hexapole permanent magnet for a high current, high charge state ion source of claim 2 wherein the angle of each sector magnet is 10 °.
4. The hexapole permanent magnet for a high current and high charge state ion source of claim 3 wherein 6 of said inner layer sector magnets are SH-type neodymium-iron-boron magnets, 6 of said SH-type neodymium-iron-boron magnets are arranged in a circumferential array, and each of said SH-type neodymium-iron-boron magnets is equally spaced from said pole head magnets on adjacent sides.
5. The hexapole permanent magnet of claim 4 wherein the outer pole head magnet is an AH-type neodymium-iron-boron magnet, and 6 AH-type neodymium-iron-boron magnets are arranged in a circumferential array.
6. The hexapole permanent magnet for a high current high charge state ion source of claim 5, wherein the included angle between the magnetizing directions of two 5 ° sector pole head magnets is 40 ° and the included angle between the magnetizing directions of two adjacent sector pole head magnets is 60 °.
7. The hexapole permanent magnet for a high current, high charge state ion source of claim 6, further comprising two cover plates fixedly mounted at both ends of the cylindrical hexapole permanent magnet.
8. The hexapole permanent magnet for a high current, high charge state ion source of claim 1, wherein the fixed shield layer is 9mm thick.
9. The hexapole permanent magnet for a high current, high charge state ion source of claim 1, wherein the radiation shielding layer is 1mm thick.
10. A method of preparing a hexapole permanent magnet for a high current, high charge state ion source of claim 7, comprising the steps of:
magnetizing the cut sector blocks according to the magnetization direction of the cuboid blank neodymium iron boron;
bonding two 5-degree fan-shaped pole head magnetic blocks to form an inner-layer pole head magnetic block;
bonding the inner layer pole head magnetic blocks and 10-degree inner layer sector magnetic blocks on two sides to form first magnetic blocks;
bonding the outer layer 3 blocks and the outer layer 10-degree fan-shaped magnetic blocks into a whole to form a second magnetic block;
bonding the first magnetic block and the second magnetic block into a whole to form a third sector magnetic block;
bonding the SH-type neodymium-iron-boron magnet blocks and the 10-degree inner-layer sector magnet blocks positioned on two sides to form a fourth magnet block;
bonding the outer layer sector magnetic blocks of the outer layer 3 blocks with the angle of 10 degrees into a whole to form a fifth magnetic block;
bonding the fourth magnetic block and the fifth magnetic block into a whole to form a sixth sector magnetic block;
sequentially staggering and bonding a plurality of third sector magnetic blocks and sixth sector magnetic blocks along a circumference square to form cylindrical neodymium iron boron magnetic blocks;
sequentially paving a plurality of sections of the NdFeB magnet blocks along the axial direction to form an NdFeB magnet block area;
the fixing shielding layer and the radiation shielding layer are sequentially sleeved on the outer side of the neodymium-iron-boron magnetic block area, and two ends of the fixing shielding layer and the radiation shielding layer are sealed and fixed through the cover plate.
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| CN202210484734.6A CN114694916B (en) | 2022-05-06 | 2022-05-06 | Six-pole permanent magnet for high-current high-charge state ion source and preparation method thereof |
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| CN114694916B true CN114694916B (en) | 2023-08-15 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2268978Y (en) * | 1996-09-16 | 1997-11-26 | 中国科学院近代物理研究所 | Hexad polarity permanent magnetic field with ECR sources |
| WO2006100217A1 (en) * | 2005-03-21 | 2006-09-28 | Commissariat A L'energie Atomique | Photon source comprising an electron cyclotron resonance multicharged ion plasma source |
| CN101951106A (en) * | 2010-08-06 | 2011-01-19 | 深圳创维－Rgb电子有限公司 | Ultrathin high-power direct current magnetoelectric motor |
| CN103560632A (en) * | 2013-11-04 | 2014-02-05 | 东南大学 | Brushless excitation mechanism based on wireless transmission of electric energy |
| CN105047355A (en) * | 2015-08-12 | 2015-11-11 | 中国科学院电工研究所 | Cylindrical permanent magnet system for focusing and guiding electron beam |
| CN105703494A (en) * | 2015-12-31 | 2016-06-22 | 丁培远 | High-power automobile starter and stator magnetic steel fixing method |
| CN107316729A (en) * | 2017-06-15 | 2017-11-03 | 中国科学院近代物理研究所 | The method of magnetic ring component and manufacture magnetic ring component |
| CN213471601U (en) * | 2020-05-22 | 2021-06-18 | 横店集团东磁股份有限公司 | Magnetic circuit die with radial multistage magnetic rings of permanent magnets with different directions |
-
2022
- 2022-05-06 CN CN202210484734.6A patent/CN114694916B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2268978Y (en) * | 1996-09-16 | 1997-11-26 | 中国科学院近代物理研究所 | Hexad polarity permanent magnetic field with ECR sources |
| WO2006100217A1 (en) * | 2005-03-21 | 2006-09-28 | Commissariat A L'energie Atomique | Photon source comprising an electron cyclotron resonance multicharged ion plasma source |
| CN101951106A (en) * | 2010-08-06 | 2011-01-19 | 深圳创维－Rgb电子有限公司 | Ultrathin high-power direct current magnetoelectric motor |
| CN103560632A (en) * | 2013-11-04 | 2014-02-05 | 东南大学 | Brushless excitation mechanism based on wireless transmission of electric energy |
| CN105047355A (en) * | 2015-08-12 | 2015-11-11 | 中国科学院电工研究所 | Cylindrical permanent magnet system for focusing and guiding electron beam |
| CN105703494A (en) * | 2015-12-31 | 2016-06-22 | 丁培远 | High-power automobile starter and stator magnetic steel fixing method |
| CN107316729A (en) * | 2017-06-15 | 2017-11-03 | 中国科学院近代物理研究所 | The method of magnetic ring component and manufacture magnetic ring component |
| CN213471601U (en) * | 2020-05-22 | 2021-06-18 | 横店集团东磁股份有限公司 | Magnetic circuit die with radial multistage magnetic rings of permanent magnets with different directions |
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