CN2377794Y - Self-target high-current ceramic neutron tube of microwave ion source - Google Patents
Self-target high-current ceramic neutron tube of microwave ion source Download PDFInfo
- Publication number
- CN2377794Y CN2377794Y CN 99211135 CN99211135U CN2377794Y CN 2377794 Y CN2377794 Y CN 2377794Y CN 99211135 CN99211135 CN 99211135 CN 99211135 U CN99211135 U CN 99211135U CN 2377794 Y CN2377794 Y CN 2377794Y
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- target
- ion source
- microwave ion
- neutron
- microwave
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Abstract
The utility model relates to a high-yield neutron generating device which is composed of a microwave ion source outer casing, a microwave ion source inner casing in a shape of a ceramic cup, a magnetic loop, an insulating sleeve, a ventilating and cooling clearance gap, a lead-out electrode, a first accelerating electrode, a second accelerating electrode, a conical target, an air-pressure regulating system, a target cooling sleeve, a neutron pipe ceramic insulating outer shell and a secondary electron suppression resistor. Due to the adoption of the microwave ion source in the shape of the ceramic cup, a cooling system, etc., the yield of the neutron pipes can reach 5*10 < 12n >/s. The utility model has the advantages of high yield and long service life. The utility model obtains the same neutron amount under identical conditions, the total ion beam current on the target is low, thereby, the problem of target cooling is easy to solve.
Description
The utility model relates to a kind of device that produces neutron, especially can produce neutron at the quiet vacuum state of sealing, and neutron yield reaches 5 * 10
12N/s.
At present, the neutron tube technology of being reported, our national neutron yield is 5 * 10
3N/s, external advanced country neutron yield has reached 10
12N/s.But the neutron tube ion source of being reported part is selected Penning ion source usually for use, it has monatomic ion ratio low, shortcomings such as operation air pressure height, the total ion beam current that causes beating on target reaches up to a hundred milliamperes, the power that is dissipated on the target reaches tens kilowatts, the target cooling problem difficulty that the solution diameter is not more than 5cm is very big, restriction neutron tube operation stability and life-span.[list of references: 1.H.H.Barschall, Neutron Sources for Basic physics andApplications, PERGAMON PRESS, P74-75 (1987) .2. treasured Wei outstanding person etc., " neutron tube technical foundation and the application thereof " P1-11 of publishing house of the Northeast China Normal University (1997).]
The purpose of this utility model provides a kind of high current neutron tube, both has been in sealing state compact accelerator formula high current neutron source, the neutron yield height, and the life-span is long, obtains identical neutron yield at the same terms, and the total ion beam current on the target is low, is easy to solve target cooling problem.
The purpose of this utility model is achieved in that a cylinder that is processed by oxygenless copper material is as microwave ion source resonant cavity housing, outside is with two radial magnetizing NdFeB magnet rings, forming uniform intensity in enclosure interior is 875G magnetic field, realize 2.450GHz microwave resonance condition, one end and the microwave source of housing, Wave guide system, ventilating system connect.The housing other end is inserted with Al
2O
3Ceramic cup, between housing and ceramic cup outer wall, be placed with the insulating case of making by polyimide material, and design has the air-out gap, so that cooling ceramic cup, ceramic cup cup bottom surface microwave transmission direction, the other end connects with the neutron tube main body, constitute independently quiet vacuum device, the place is placed with metal electrode at ceramic rim of a cup, is used for ion and draws, be called the ion extraction electrode, the extraction electrode front is provided with first accelerating electrode, second accelerating electrode, cone target, pressure regulation system and target cooling system, the ion extraction electrode pact+200KV of place current potential; First accelerating electrode is in pact+150KV current potential, second accelerating electrode is in about zero potential, and target is in approximately-2----5KV current potential, and it is to be connected to proper resistor and to obtain between the target and second accelerating electrode, play the secondary electron inhibitory action, be added with cooling jacket in the cone target outside.The operation of neutron tube at first utilize pressure regulation system make neutron tube both the ion source internal gas pressure reach about 10-3Pa scope, start microwave source, microwave output power is adjusted at the 300-500W scope, because ceramic cup is in the 875G uniform magnetic field, microwave imports ceramic cup into, strong resonance absorption ionization appears in ceramic cup, form plasma, the deuterium ion in the ceramic cup quickens through two-stage by fairlead, its energy reaches 200KeV, beam intensity is 40-90mA, beats afterwards on target, passes through deuterium---tritium should produce the 14MeV fast neutron, owing to select the microwave-driven ion source here for use, it has monatomic ion ratio height, and stable operation air pressure is low, and is electrodeless, be convenient to advantages such as high voltage isolation, make it to be easier to realize that neutron yield reaches 5 * 10
12The purpose of n/s.
(1) use the microwave-driven ion source, 1. its monatomic ion ratio height is compared with Penning ion source and to be obtained identical neutron yield at the same terms and beat at the total ion beam current on the target and can reduce more than 8 times, thereby helps the target cooling, improves neutron tube life-span and stability; 2. its stable operation air pressure is low, can be 10
-3The work of Pa scope can reduce ion beam transport process and neutral gas molecule collision probability, improves the neutron tube withstand voltage properties; 3. because its electrodeless feature, but signifying long-life stable operation to the high current neutron tube is electrodeless; 4. because microwave has the feature of without hindrance transmission in dielectric, help high voltage and isolate.(2) adopt ceramic cup as the ion source inner housing, ceramic cup and accelerating system, target and pressure regulation system constitute independently quiet vacuum device, help the adjustment of maintenance separately of neutron tube, microwave source and Wave guide system, ceramic cup is provided with enough gamps edge, helps high voltage and isolates.Between ceramic cup and ion source resonant cavity outer metal housing body, be placed with insulating case and the ventilation gap that polyimide material is made, help the cooling of high-tension further isolation and ceramic cup.(3) adopt the two poles of the earth to quicken, help the adjustment of ion beam optical system and improve the deuterium ion energy, thereby improve neutron tube performance and neutron yield.(4) owing to adopt cone shape target, the cooling that helps improving the effective area of target and improve target.
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing is the vertical section structural map that the microwave ion source pottery has target high current neutron tube of one's own.
In the accompanying drawing 1, microwave ion source shell body 2, ceramic cup type microwave ion source inner housing 3, magnet ring 4, insulating case 5, the cooling gap 6 that ventilates, extraction electrode 7, first accelerating electrode 8, second accelerating electrode 9, circular cone build target 10, pressure regulation system 11, target coolant jacket 12, neutron tube ceramic insulation shell 13, secondary electron suppress resistance
Among the figure, microwave ion source shell body (1), ceramic cup type microwave ion source inner housing (2), magnet ring (3), insulating case (4), extraction electrode (6) constitute high current neutron tube microwave ion source.Shell body (1) is made by oxygenless copper material, and an end connects by flange with the microwave waveguide system.Magnet ring (3) is two radial magnetizing NdFeB, is enclosed within shell body (1) outside, forms 875G magnetic field in the microwave ion source housing, satisfies 2.450GHz microwave resonance acceptance condition.Insulating case (4) is a polyimide material, it has advantage, insulating cases (4) such as high temperature resistant, radioresistance, good insulation preformance and is placed between shell body (1) and the ceramic cup type microwave ion source inner housing (2), the main further buffer action of high voltage that rises, between ceramic cup inner housing (2) and insulating case (4), establish the cooling gap (5) that ventilates, to guarantee that ceramic cup inner housing (2) operates in normal temperature, cooling air direction at the bottom of the ceramic cup flows to, and discharges from the gap.Ceramic cup type microwave ion source inner housing (2) is by No. 95 Al
2O
3Pottery is made, and it has the characteristic to the without hindrance transmission of microwave, and good heat transfer and High-Voltage Insulation performance are arranged, and helps the ion source heat radiation, and electric insulation improves monatomic ion ratio.Extraction electrode (6), first accelerating electrode (7), second accelerating electrode (8) and target are to be made by metal material, with neutron tube ceramic insulation shell (12), ceramic cup type microwave ion source inner housing (1) constitutes the independent vacuum device through the sealing-in of metallization annealing in hydrogen atmosphere.Inner housing (2) inserts in the insulating case (4).Target coolant jacket (11) is provided with the turnover cooling nozzle, with the outer side bonds of target.Enter ceramic internal ion-source resonant cavity through Wave guide system by the ceramic cup bottom from microwave source (2.450GHz 1000W) microwave.Because the strong resonance absorption to microwave appears in the existence of 875G uniform magnetic field, form high-density plasma.First accelerating electrode (7) is slit into by metal material, be added with+100---+200KV high voltage, isolate with ceramic ring with extraction electrode (6), be added with on the extraction electrode+150---the 250KV high potential, potential difference between first accelerating electrode (7) and extraction electrode (6) is about-50KV, deuterium ion in the ceramic cup (2) is drawn and is quickened through fairlead under the effect of-50KV current potential, second accelerating electrode (8) is in zero potential approximately, and potential difference is 100 between first accelerating electrode (7)---200KV, the back is accelerated to 150-250KeV by the second accelerating electrode secondary energy is drawn and quickened to deuterium ion by first accelerating electrode (7), beat afterwards on cone deuteron target (9), produce the 14MeV fast neutron, beat deuterium ion on the cone target secondary electron of flowing through and suppress resistance (13), in this generation-3----5KV pressure drop, target Relative Zero current potential is in positive potential, plays the secondary electron inhibitory action.Pressure regulation system (10) built-in storage absorption deuterium tritium gaseous mixture, can adjust neutron tube by the control of external circuit is ionogenic operating air pressure.Coolant jacket is connected with cooling liquid in (11), the heat energy that the target that is used to dissipate produces.
Claims (2)
1, a kind of by microwave ion source, the microwave ion source pottery that pottery has formations such as target of one's own has target high current neutron tube of one's own, it is characterized in that: microwave ion source shell body 1, ceramic cup type microwave ion source inner housing 2, magnet ring 3, insulating case 4, extraction pole 6 constitutes microwave ion source, shell body 1 one ends connect by flange with the microwave waveguide system, magnet ring 3 is that two radial magnetizing NdFeB are enclosed within outer shell body 1 outside, insulating case 4 is placed between shell body 1 and the ceramic cup type microwave ion source inner housing 2, establish the cooling gap 5 that ventilates at ceramic cup inner housing 2 and 4 of insulating cases, cooling air direction at the bottom of the cup flows into, discharge from the gap, extraction electrode 6, first accelerating electrode 7, second accelerating electrode 8 and target are made by metal material, with neutron tube ceramic insulation shell 12, ceramic cup type microwave ion source inner housing 1 constitutes the independent vacuum device through the sealing-in of metallization annealing in hydrogen atmosphere, inner housing 2 inserts in the insulating case 4, target coolant jacket 11 is provided with the turnover cooling nozzle, with the outer side bonds of target, first accelerating electrode 7 is made by metal material, add have an appointment+100---+200KV voltage, isolate with extraction pole 6 usefulness ceramic rings, add on the extraction electrode have an appointment+150---+250KV high potential, the about 50KV of potential difference that first accelerator 7 and extraction pole are 6, deuterium ion in the ceramic cup 2 is drawn and is quickened through fairlead under the effect of-50KV current potential, second accelerator current potential 8 place's zero potentials, and the potential difference that first accelerating electrode is 7 is 100---200KV, deuterium ion is drawn acceleration and is accelerated to 150 by second accelerator again---250KeV, beat on the cone tritium target, produce the 14KeV fast neutron, beat deuterium ion on the target secondary electron of flowing through and suppress resistance 13, produce 3a---5KV pressure drop, target is in positive potential, play secondary electron inhibitory action pressure regulation system 10 stored with absorption deuterium tritium gaseous mixture, can adjust neutron tube by the control of external circuit is ionogenic operating air pressure, is connected with cooling liquid in the coolant jacket 11.
2, have target high current neutron tube of one's own according to extremely sharp 1 the microwave ion source pottery of requiring, it is characterized in that described shell body 1 made by oxygenless copper material, ceramic cup type microwave ion source inner housing 2 is by 95C
5AL
2O
3Pottery is made.Insulating sleeve 4 is that polyimide material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211135 CN2377794Y (en) | 1999-05-21 | 1999-05-21 | Self-target high-current ceramic neutron tube of microwave ion source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211135 CN2377794Y (en) | 1999-05-21 | 1999-05-21 | Self-target high-current ceramic neutron tube of microwave ion source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2377794Y true CN2377794Y (en) | 2000-05-10 |
Family
ID=34004142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211135 Expired - Fee Related CN2377794Y (en) | 1999-05-21 | 1999-05-21 | Self-target high-current ceramic neutron tube of microwave ion source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2377794Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310373C (en) * | 2005-01-07 | 2007-04-11 | 中国科学院等离子体物理研究所 | Novel high-power microwave vacuum insulating window |
| CN101965094A (en) * | 2010-10-11 | 2011-02-02 | 长春致方达科技有限责任公司 | Spherical target ceramic neutron tube and manufacturing method thereof |
| CN101525996B (en) * | 2009-04-16 | 2013-04-24 | 大庆油田有限责任公司 | Leapfrog neutron tube target voltage control method |
| CN103200759A (en) * | 2013-03-17 | 2013-07-10 | 东北师范大学 | Heat dissipation mechanism of high-yield neutron generator |
| CN103946724A (en) * | 2011-09-14 | 2014-07-23 | 普拉德研究及开发股份有限公司 | Floating intermediate electrode configuration for downhole nuclear radiation generator |
| CN104033148A (en) * | 2013-12-09 | 2014-09-10 | 哈尔滨市源盛达电子技术有限公司 | Manufacture method of ceramic ring with insulated isolation groove for small-diameter neutron tubes |
| CN104244560A (en) * | 2014-07-16 | 2014-12-24 | 中国工程物理研究院核物理与化学研究所 | Small high-yield deuterium-deuterium neutron generator |
| CN105122419A (en) * | 2013-03-15 | 2015-12-02 | 星火工业有限公司 | Compact high-voltage plasma source for neutron generation |
| CN107479101A (en) * | 2017-08-09 | 2017-12-15 | 徐彬 | Oil saturation analytical equipment |
| CN108271310A (en) * | 2018-01-12 | 2018-07-10 | 中国科学院合肥物质科学研究院 | A kind of postposition magnetic-mirror field high current ion acceleration system |
| CN109587926A (en) * | 2019-01-17 | 2019-04-05 | 中国科学院合肥物质科学研究院 | A kind of miniaturization strong current neutron generator |
| CN111479377A (en) * | 2020-04-22 | 2020-07-31 | 吉林大学 | D-D neutron tube target film protective layer |
| CN111642054A (en) * | 2020-05-26 | 2020-09-08 | 中国原子能科学研究院 | Portable neutron generator |
| CN111741583A (en) * | 2020-05-26 | 2020-10-02 | 中国原子能科学研究院 | Integrated desktop type neutron generator |
-
1999
- 1999-05-21 CN CN 99211135 patent/CN2377794Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310373C (en) * | 2005-01-07 | 2007-04-11 | 中国科学院等离子体物理研究所 | Novel high-power microwave vacuum insulating window |
| CN101525996B (en) * | 2009-04-16 | 2013-04-24 | 大庆油田有限责任公司 | Leapfrog neutron tube target voltage control method |
| US9793084B2 (en) | 2009-11-16 | 2017-10-17 | Schlumberger Technology Corporation | Floating intermediate electrode configuration for downhole nuclear radiation generator |
| CN101965094A (en) * | 2010-10-11 | 2011-02-02 | 长春致方达科技有限责任公司 | Spherical target ceramic neutron tube and manufacturing method thereof |
| CN103946724A (en) * | 2011-09-14 | 2014-07-23 | 普拉德研究及开发股份有限公司 | Floating intermediate electrode configuration for downhole nuclear radiation generator |
| CN105122419A (en) * | 2013-03-15 | 2015-12-02 | 星火工业有限公司 | Compact high-voltage plasma source for neutron generation |
| CN103200759A (en) * | 2013-03-17 | 2013-07-10 | 东北师范大学 | Heat dissipation mechanism of high-yield neutron generator |
| CN104033148B (en) * | 2013-12-09 | 2017-02-22 | 哈尔滨市源盛达电子技术有限公司 | Manufacture method of ceramic ring with insulated isolation groove for small-diameter neutron tubes |
| CN104033148A (en) * | 2013-12-09 | 2014-09-10 | 哈尔滨市源盛达电子技术有限公司 | Manufacture method of ceramic ring with insulated isolation groove for small-diameter neutron tubes |
| CN104244560A (en) * | 2014-07-16 | 2014-12-24 | 中国工程物理研究院核物理与化学研究所 | Small high-yield deuterium-deuterium neutron generator |
| CN107479101A (en) * | 2017-08-09 | 2017-12-15 | 徐彬 | Oil saturation analytical equipment |
| CN108271310A (en) * | 2018-01-12 | 2018-07-10 | 中国科学院合肥物质科学研究院 | A kind of postposition magnetic-mirror field high current ion acceleration system |
| CN109587926A (en) * | 2019-01-17 | 2019-04-05 | 中国科学院合肥物质科学研究院 | A kind of miniaturization strong current neutron generator |
| CN111479377A (en) * | 2020-04-22 | 2020-07-31 | 吉林大学 | D-D neutron tube target film protective layer |
| CN111642054A (en) * | 2020-05-26 | 2020-09-08 | 中国原子能科学研究院 | Portable neutron generator |
| CN111741583A (en) * | 2020-05-26 | 2020-10-02 | 中国原子能科学研究院 | Integrated desktop type neutron generator |
| CN111741583B (en) * | 2020-05-26 | 2021-09-28 | 中国原子能科学研究院 | Integrated desktop type neutron generator |
| CN111642054B (en) * | 2020-05-26 | 2023-03-07 | 中国原子能科学研究院 | Portable neutron generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |