CN113097036B - Neutron tube structure for bidirectionally leading out penning ion source - Google Patents
Neutron tube structure for bidirectionally leading out penning ion source Download PDFInfo
- Publication number
- CN113097036B CN113097036B CN202110360414.5A CN202110360414A CN113097036B CN 113097036 B CN113097036 B CN 113097036B CN 202110360414 A CN202110360414 A CN 202110360414A CN 113097036 B CN113097036 B CN 113097036B
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- cylinder
- cathode
- shell
- target
- neutron tube
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- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 239000012212 insulator Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 25
- 230000009471 action Effects 0.000 abstract description 5
- 230000005684 electric field Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J27/00—Ion beam tubes
- H01J27/02—Ion sources; Ion guns
- H01J27/04—Ion sources; Ion guns using reflex discharge, e.g. Penning ion sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J27/00—Ion beam tubes
- H01J27/02—Ion sources; Ion guns
- H01J27/022—Details
Abstract
The neutron tube structure of the bi-directional penning ion source comprises a shell and an anode cylinder packaged in the shell, wherein two sides of the anode cylinder are respectively provided with a cathode and are embedded with the cathode on one side of a ceramic cylinder together; through externally heightening voltage to the anode cylinder, under the combined action of a magnetic field and an electric field, electrons emitted from the cathode and gas in the anode cylinder are ionized, the generated ions are led out from holes at two sides of the anode cylinder respectively, and the led-out ions bombard a target after being accelerated by Faraday cylinders at two sides, so that neutrons are generated through reaction; the invention improves the neutron yield, prolongs the service life of the neutron tube, improves the utilization rate of the neutron tube, and has the advantages of simple structure, convenient operation, high efficiency and practicability.
Description
Technical Field
The invention relates to the technical field of neutron tubes, in particular to a neutron tube structure for bidirectionally leading out penning ion sources.
Background
The neutron tube is widely applied in actual production, is mainly applied to the related fields of petroleum logging, uranium exploration and the like, and the neutron logging can be carried out by utilizing the neutron tube designed by the penning ion source, so that the utilization rate of an oil field can be greatly improved. Meanwhile, the development of the neutron tube with high yield and long service life accords with the development direction of energy conservation and emission reduction in the current stage of China. However, the traditional neutron tube can only lead out penning ion sources in a single direction, the yield is low, and the utilization rate of the neutron tube is low. How to ensure that higher extraction beam current can be obtained under smaller structural size, and the maximum utilization rate of the neutron tube can be exerted by utilizing a limited space is the key of the problem of the current development of the miniaturized neutron tube.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide a neutron tube structure of a bi-directional penning ion source, which can improve the intensity of a beam extracted from the penning ion source under a relatively small size, improve the neutron yield and prolong the service life of the penning ion source, simultaneously or alternately extract the penning ion source in two directions, perform two-end targeting to generate neutrons, improve the utilization rate of the penning ion source and have the advantages of simple structure, convenience in operation, high efficiency and practicability.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a neutron tube structure of penning ion source is drawn forth to two-way, includes shell 1 and encapsulation in the positive pole section of thick bamboo 2 in shell 1, just positive pole section of thick bamboo 2 both ends are provided with negative pole 3 respectively, positive pole section of thick bamboo 2 both ends inlay in the inboard end of ceramic cylinder 4 jointly with negative pole 3, the outside end of ceramic cylinder 4 is connected with one side of magnetic ring 5, the opposite side of magnetic ring 5 is equipped with the entry side of faraday's section of thick bamboo 6, the exit side of faraday's section of thick bamboo 6 is connected with the inside of target insulator 7, the inboard of target insulator 7 and faraday's section of thick bamboo 6 are inlayed and are had target 8, the laminating shell 1 inner wall in the target insulator 7 outside.
An end cover 9 is arranged on one side of the shell 1.
The outer diameter of the shell 1 is 36-38mm, and the inner diameter is 32-34mm; the cathode 3 and the magnetic ring 5 are respectively provided with holes, wherein the diameter of the holes in the cathode 3 is 4-6mm; the diameter of the hole in the magnetic ring 5 is 10-12mm.
The other side of the magnetic ring 5 is 5-7mm away from the inlet side of the Faraday cage 6.
Preferably, the anode cylinder 2 is made of copper material.
Preferably, the cathode 3 is made of aluminum material.
Preferably, the magnetic ring 5 is made of permanent magnet material.
Preferably, the faraday cage 6 is made of stainless steel.
Preferably, the shell 1, the end cover 9, the ceramic cylinder 4 and the target insulator 7 are made of ceramic materials.
The target 8, the target insulator 7, the Faraday cylinder 6, the magnetic ring 5, the ceramic cylinder 4, the cathode 3 and the anode cylinder 2 are coaxial.
The invention has the beneficial effects that:
and (3) applying high voltage to the anode cylinder 2, ionizing electrons emitted from the cathode 3 and gas in the anode cylinder under the combined action of a magnetic field and an electric field, leading out generated ions from holes on two sides respectively, accelerating the led-out ions through Faraday cylinders 6 on two sides, bombarding the ions on a target, and reacting to generate neutrons. Compared with the traditional neutron tube with the penning ion source led out unidirectionally, the invention can lead out the penning ion source from two sides bidirectionally at the same time or respectively from two ends sequentially, thereby improving the neutron yield, prolonging the service life of the neutron tube and improving the utilization rate of the neutron tube.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a 3D model diagram of the present invention.
In the figure: 1. a housing; 2. an anode cylinder; 3. a cathode; 4. a ceramic cylinder; 5. a magnetic ring; 6. a Faraday cage; 7. a target insulator; 8. a target; 9. an end cap.
Detailed Description
The patent of the invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, a neutron tube structure of a bi-directional penning ion source comprises a shell 1 and an anode cylinder 2 encapsulated in the shell 1, wherein cathodes 3 are respectively arranged at two ends of the anode cylinder 2 in the shell 1, two ends of the anode cylinder 2 and the cathodes 3 are jointly embedded at the inner side end of a ceramic cylinder 4, the outer side end of the ceramic cylinder 4 is connected with one side of a magnetic ring 5, the other side of the magnetic ring 5 is provided with an inlet side of a Faraday cylinder 6, the outlet side of the Faraday cylinder 6 is connected with the inner side of a target insulator 7, a target 8 is embedded in the inner side of the target insulator 7 and the Faraday cylinder 6, and the outer side of the target insulator 7 is attached to the inner wall of the shell 1.
An end cover 9 is arranged on one side of the shell 1.
The outer diameter of the shell 1 is 36-38mm, and the inner diameter is 32-34mm; the cathode 3 and the magnetic ring 5 are respectively provided with holes, wherein the diameter of the holes in the cathode 3 is 4-6mm; the diameter of the hole in the magnetic ring 5 is 10-12mm.
The other side of the magnetic ring 5 is 5-7mm away from the inlet side of the Faraday cage 6.
Preferably, the anode cylinder 2 is made of copper material with good electric conductivity.
Preferably, the cathode 3 is made of aluminum material, and provides electrons required for the reaction.
Preferably, the magnetic ring 5 is made of permanent magnet material, and provides a constant magnetic field environment.
Preferably, the faraday cage 6 is made of stainless steel.
Preferably, the shell 1, the end cover 9, the ceramic cylinder 4 and the target insulator 7 are made of ceramic materials, so that the ceramic material has good insulating performance.
The target 8, the target insulator 7, the Faraday cylinder 6, the magnetic ring 5, the ceramic cylinder 4, the cathode 3 and the anode cylinder 2 are coaxial.
The working principle of the invention is as follows
The penning ion source part is composed of a magnetic ring 5, a ceramic cylinder 4, a cathode 3 and an anode cylinder 2, wherein high voltage is externally applied to the anode cylinder 2, electrons emitted from the cathode 3 and gas in the anode cylinder are ionized under the combined action of a magnetic field and an electric field, the ceramic cylinder 4 is used for fixing the cathode 3 and the anode cylinder 2, and holes are formed in the middle of the cathode 3 and the magnetic ring 5 respectively so as to facilitate the extraction of plasmas from two sides;
the Faraday drums 6 on two sides form an accelerating system part, and the generated ions are guided out and accelerated to bombard the target under the action of an accelerating electric field.
The target part consists of a target electrode 8 and a target electrode insulator 7, and the accelerated ions bombard the target surface to generate neutrons.
The shell 1 and the end cover 9 integrally encapsulate the penning ion source part, the accelerating system part and the target part inside to form a complete neutron tube.
The anode cylinder 2 is externally applied with high voltage, electrons emitted from the cathode 3 and gas in the anode cylinder are ionized under the combined action of a magnetic field and an electric field, holes on two sides of the ions are led out respectively, and the generated ions are led out and accelerated by the Faraday cylinders 6 on two sides and bombard a target, so that neutrons are generated by reaction.
The above embodiments are only for illustrating the present invention, not for limiting the present invention, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions are also within the scope of the present invention, and the protection scope of the present invention should be defined by the claims thereof.
Claims (5)
1. A neutron tube structure for bidirectionally extracting penning ion sources, which extracts the penning ion sources simultaneously or alternately in two directions and performs target shooting at two ends to generate neutrons; including shell (1) and encapsulation in positive pole section of thick bamboo (2) in shell (1), its characterized in that: cathode (3) is respectively arranged at two ends of the anode cylinder (2) in the shell (1), two ends of the anode cylinder (2) and the cathode (3) are embedded in the inner side end of the ceramic cylinder (4) together, the outer side end of the ceramic cylinder (4) is connected with one side of the magnetic ring (5), the other side of the magnetic ring (5) is provided with the inlet side of the Faraday cylinder (6), the outlet side of the Faraday cylinder (6) is connected with the inner side of the target insulator (7), the inner side of the target insulator (7) is embedded with a target (8), and the outer side of the target insulator (7) is attached to the inner wall of the shell (1);
the outer diameter of the shell (1) is 36-38mm, and the inner diameter is 32-34mm; the middle of the cathode (3) and the magnetic ring (5) are respectively provided with holes, wherein the diameter of the holes in the cathode (3) is 4-6mm; the diameter of the hole in the magnetic ring (5) is 10-12mm;
the distance between the other side of the magnetic ring (5) and the inlet side of the Faraday cylinder (6) is 5-7mm; an end cover (9) is arranged on one side of the shell (1);
the shell (1), the end cover (9), the ceramic cylinder (4) and the target insulator (7) are made of ceramic materials;
the cathode is characterized in that the target (8), the target insulator (7), the Faraday cylinder (6), the magnetic ring (5), the ceramic cylinder (4), the cathode (3) and the anode cylinder (2) are coaxial.
2. The neutron tube structure of the bi-directional led-out penning ion source of claim 1, wherein: the anode cylinder (2) is made of copper material.
3. The neutron tube structure of the bi-directional led-out penning ion source of claim 1, wherein: the cathode (3) is made of aluminum material.
4. The neutron tube structure of the bi-directional led-out penning ion source of claim 1, wherein: the magnetic ring (5) is made of permanent magnet materials.
5. The neutron tube structure of the bi-directional led-out penning ion source of claim 1, wherein: the Faraday cylinder (6) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110360414.5A CN113097036B (en) | 2021-04-02 | 2021-04-02 | Neutron tube structure for bidirectionally leading out penning ion source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110360414.5A CN113097036B (en) | 2021-04-02 | 2021-04-02 | Neutron tube structure for bidirectionally leading out penning ion source |
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| CN113097036A CN113097036A (en) | 2021-07-09 |
| CN113097036B true CN113097036B (en) | 2023-10-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114007323A (en) * | 2021-11-02 | 2022-02-01 | 西京学院 | Neutron tube structure of cone-shaped penning ion source |
| CN114007322A (en) * | 2021-11-02 | 2022-02-01 | 西京学院 | Neutron tube structure with magnetic anode tube penning ion source led out in two directions |
| CN114645277B (en) * | 2022-02-24 | 2023-11-03 | 贝光科技(苏州)有限公司 | Ion generating device with mirror image electrode beam control |
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