CN202210159U - Portable neutron detection device - Google Patents
Portable neutron detection device Download PDFInfo
- Publication number
- CN202210159U CN202210159U CN2011202217039U CN201120221703U CN202210159U CN 202210159 U CN202210159 U CN 202210159U CN 2011202217039 U CN2011202217039 U CN 2011202217039U CN 201120221703 U CN201120221703 U CN 201120221703U CN 202210159 U CN202210159 U CN 202210159U
- Authority
- CN
- China
- Prior art keywords
- detection device
- outer sleeve
- neutron detection
- over cap
- portable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
- 239000007767 bonding agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001956 neutron scattering Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000012749 thinning agent Substances 0.000 description 1
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- Measurement Of Radiation (AREA)
Abstract
The utility model relates to a portable neutron detection device. The portable neutron detection device comprises a outer sleeve (2), and a neutron scintillator converting screen (5), a photoconductive material (6), an end window photomultiplier (7) and a base (3) which are sequentially installed inside the outer sleeve (2) and are connected with one another in a tightly pressing way, wherein an output port (4) which protrudes at an outer end of the base (3) is formed at one end of the end window photomultiplier (7); the output port (4) is sequentially connected with a preposed amplifier (9), a main amplifier(10) and a multi-channel analyzer (11) through a lead wire; a protective cover (1) which is provided with internal threads and can be screwed is arranged at the front end of the outer sleeve (2); the protective cover (1) and the outer sleeve (2) are made of aluminium; the screwing speed is regulated by screwing the protective cover (1); and the outer surface of the end window photomultiplier (7) is coated with a magnetic shielding material (8). The portable neutron detection device can effectively shield light signals on the outer side and is high in neutron detection efficiency; and the portable neutron detection device is simple in structure and convenient to carry.
Description
Technical field
The utility model belongs to the neutron detection technical field, is specifically related to a kind of portable neutron detection device.
Background technology
Be accompanied by the develop rapidly of nuclear science technology, the popularization of the construction of nuclear power station, people to the concern of radioactive ray also more and more widely, like X ray, gamma-rays, neutron ray or the like.Corresponding some just occurred and survey the device of radioactive rays, as a kind of gamma detector that is used for radioactive matter monitoring is provided in the Chinese utility model patent 03209416.7, it comprises and places scintillator, photoconduction, photomultiplier and the amplifier that connects successively in the outer cover; Amplifier is connected through lead with photomultiplier; Do not window in the position of the upper surface of scintillator and photoconduction, outer cover lower surface and base are fixed, and the lower end joint face of base is provided with a plurality of beams of symmetric offset spread; Its design feature is; The lower surface of said scintillator and periphery are contained by stereotype, and are connected with the fixing support plate of base, be connected with stereotype with the setting of amplifier linkage section at photomultiplier, photomultiplier, photoconduction, scintillator are compressed and the governor motion of amplifier location and installation; But the scintillator in this structure; Can only survey gamma ray and some light signals, not possess any Effect on Detecting for neutron ray, and in order to shield the interference of other rays; The employing stereotype contains, and makes its structure more complicated.In addition, traditional neutron detection equipment is like what use in the neutron scattering experiment
3The He detector, because
3He costs an arm and a leg, and its external device is numerous and jumbled, carries inconvenience, so practicality is not strong.
The utility model content
To the problem that exists in the prior art, the purpose of the utility model provides a kind of portable neutron detection device simple in structure.
For reaching above purpose, the technical scheme that the utility model adopts is:
A kind of portable neutron detection device; This device comprises that outer sleeve 2 reaches neutron scintilator conversion screen 5, light-guide material 6, end window photomultiplier 7 and the base 3 that is installed in the outer sleeve 2 successively and compresses connection; One end of end window photomultiplier 7 is provided with the output port of giving prominence in base 3 outer ends 4; Output port 4 connects prime amplifier 9, main amplifier 10 and multichannel analyzer 11 successively through lead; The front end of said outer sleeve 2 is provided with the over cap 1 that the band internal thread can be screwed; Through rotating this over cap 1 regulating the precession degree, said over cap 1 and outer sleeve 2 are processed by aluminum material, and the outside surface of said end window photomultiplier 7 is surrounded by magnetic shielding material 8.
Further, the caping thickness of said over cap 1 is 0.1-0.3mm.
Further, the caping thickness of said over cap 1 is 0.2mm.
Further, said neutron scintilator conversion screen 5 does
6LiF+ZnS (Ag), H
3 10BO
3+ ZnS (Ag), do
10B
2O
3+ ZnS (Ag) or
10BN+ZnS (Ag) type neutron scintilator conversion screen, wherein Ag is an active agent.
Further, said neutron scintilator conversion screen 5 is H
3 10BO
3+ ZnS (Ag) type neutron scintilator conversion screen, wherein, H
3 10BO
3With the weight ratio of ZnS (Ag) be 1: 1-9 is preferably 1: 3-6.
Further, said light-guide material 6 is the optics grease of silicone fluid.
The beneficial effect of the utility model is: because the portable neutron detection device that the utility model provides adopts the aluminum outer sleeve, can shield outside light signal effectively, and aluminium is little to the absorption cross section of neutron, thereby high to the neutron detection efficiency; In addition, the apparatus structure of the utility model is simple, is easy to carry.
Description of drawings
Fig. 1 is the structural drawing of aluminum outer sleeve in the said device of the utility model;
Fig. 2 is the structural representation in the aluminum outer sleeve among Fig. 1;
Fig. 3 is the connection synoptic diagram of detection of electrons parts in the said device of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Shown in Fig. 1-3; The portable neutron detection device that the utility model provides comprises that outer sleeve 2 reaches neutron scintilator conversion screen 5, light-guide material 6, end window photomultiplier 7 and the base 3 that is installed in the outer sleeve 2 successively and compresses connection; The outside surface of photomultiplier 7 is surrounded by magnetic shielding material 8; One end of end window photomultiplier 7 is provided with the output port of giving prominence in base 3 outer ends 4, uses lead can this output port 4 be connected with prime amplifier 9, main amplifier 10 and multichannel analyzer successively.
In the described device of the utility model, said outer sleeve 2 adopts aluminium to process, to play the shielding action of external sidelight signal; Adopt the aluminum outer sleeve also to reduce the absorptivity of 2 pairs of neutrons of outer sleeve simultaneously, and the front end of outer sleeve 2 (neutron incident end) is provided with tapped over cap 1, over cap 1 also adopts aluminium to process; Its caping thickness is 0.1-0.3mm; Be preferably 0.2mm, so can further reduce influence, improve detection efficiency neutron.In addition, the user can regulate the precession degree of over cap 1, thereby can change the neutron scintilator conversion screen 5 of different-thickness according to actual conditions easily.
In the utility model, said neutron scintilator conversion screen does
6LiF+ZnS (Ag), H
3 10BO
3+ ZnS (Ag), do
10B
2O
3+ ZnS (Ag) or
10BN+ZnS (Ag) type neutron scintilator conversion screen.In the present embodiment, employing be H
3 10BO
3+ ZnS (Ag) type neutron scintilator conversion screen, wherein, H
3 10BO
3With the weight ratio of ZnS (Ag) be 1: 1-9 is preferably 1: 3-6.
The H that is adopted in the present embodiment
3 10BO
3The preparation method of+ZnS (Ag) type neutron scintilator conversion screen is following:
Step 1: with particle diameter is the H of 1-10 μ m
3 10BO
3(production of Dalian Bo Entan Science and Technology Ltd.) and luminescent material ZnS (Ag) they are 1 according to weight ratio: the mixed of 1-9, and to join weight be H
3 10BO
3In the 0.25-1 of luminescent material ZnS (Ag) general assembly (TW) bonding agent doubly, mix, add diluent again; Wherein, said bonding agent is a polystyrene, and the mixed solvent of polymethylmethacrylate or epoxy resin and hardening agent, said thinning agent are the ethanol of 95% (weight); Above-mentioned starting material all can be buied on market;
Step 2: the potpourri that dilution in the step 1 is good is put on the aluminum thin plate that thickness is 0.2-0.8mm, uses film caster that said potpourri evenly is launched into the preparation film of thickness as 200-500 μ m;
Step 3: step 2 gained is prepared film at room temperature be placed to the bonding agent full solidification, accomplish preparation.
In addition, in the described device of the utility model, between neutron scintilator conversion screen 5 and end window photomultiplier 7, be provided with light-guide material 6, thereby help the transmission of the photon that neutron scintilator conversion screen 5 converts neutron to.In the present embodiment, said light-guide material 6 is the optics grease of silicone fluid.
In addition; In this device; Because the outside surface at end window photomultiplier 7 is surrounded by magnetic shielding material (when buying end window photomultiplier 7, can require producer to add as required); Thereby realized shielding, avoided the influence of external magnetic field, made the electric signal of output reflect the situation of institute's detected neutron more exactly electronics in the photomultiplier to magnetic field.
During use, during from the port incident of over cap 1, can penetrate aluminium lamination and incide inner neutron scintilator conversion screen 5 as neutron; Convert neutron to light signal through neutron scintilator conversion screen 5; Through optical material 6 optical signal transmission is arrived in the end window photomultiplier 7, thereby make light signal change electric signal into, this electric signal is derived from output port 4 through lead; Be transferred to prime amplifier 9 and main amplifier 10 successively; Make electric signal obtain amplifying, be transferred to multichannel analyzer 11 at last with the realization counting, and then reflection is to the Effect on Detecting of neutron.
The described device of the utility model is not limited to the embodiment described in the embodiment, and those skilled in the art draw other embodiment according to the technical scheme of the utility model, belongs to the technological innovation scope of the utility model equally.
Claims (4)
1. portable neutron detection device; This device comprises that outer sleeve (2) reaches neutron scintilator conversion screen (5), light-guide material (6), end window photomultiplier (7) and the base (3) that is installed in the outer sleeve (2) successively and compresses connection; One end of end window photomultiplier (7) is provided with the output port of giving prominence in base (3) outer end (4); Output port (4) connects prime amplifier (9), main amplifier (10) and multichannel analyzer (11) successively through lead; It is characterized in that: the front end of said outer sleeve (2) is provided with the over cap (1) that the band internal thread can be screwed; Through rotating this over cap (1) to regulate the precession degree, said over cap (1) and outer sleeve (2) are processed by aluminum material, and the outside surface of said end window photomultiplier (7) is surrounded by magnetic shielding material (8).
2. a kind of portable neutron detection device according to claim 1, it is characterized in that: the caping thickness of said over cap (1) is 0.1-0.3mm.
3. a kind of portable neutron detection device according to claim 2, it is characterized in that: the caping thickness of said over cap (1) is 0.2mm.
4. according to the described a kind of portable neutron detection device of one of claim 1 to 3, it is characterized in that said light-guide material (6) is the optics grease of silicone fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202217039U CN202210159U (en) | 2011-06-28 | 2011-06-28 | Portable neutron detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202217039U CN202210159U (en) | 2011-06-28 | 2011-06-28 | Portable neutron detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202210159U true CN202210159U (en) | 2012-05-02 |
Family
ID=45989703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202217039U Expired - Lifetime CN202210159U (en) | 2011-06-28 | 2011-06-28 | Portable neutron detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202210159U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253404A (en) * | 2011-06-28 | 2011-11-23 | 中国原子能科学研究院 | Portable neutron detection device |
| CN104597479A (en) * | 2014-12-30 | 2015-05-06 | 中国原子能科学研究院 | Neutron position detection device |
| CN105487104A (en) * | 2015-12-31 | 2016-04-13 | 中国科学院青海盐湖研究所 | Potassium testing method based on raw material potassium ore sodium iodide crystal potassium testing instrument |
| CN106199679A (en) * | 2016-08-24 | 2016-12-07 | 中国工程物理研究院核物理与化学研究所 | A kind of neutron detector collecting principle based on fission electronics |
-
2011
- 2011-06-28 CN CN2011202217039U patent/CN202210159U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253404A (en) * | 2011-06-28 | 2011-11-23 | 中国原子能科学研究院 | Portable neutron detection device |
| CN104597479A (en) * | 2014-12-30 | 2015-05-06 | 中国原子能科学研究院 | Neutron position detection device |
| CN105487104A (en) * | 2015-12-31 | 2016-04-13 | 中国科学院青海盐湖研究所 | Potassium testing method based on raw material potassium ore sodium iodide crystal potassium testing instrument |
| CN106199679A (en) * | 2016-08-24 | 2016-12-07 | 中国工程物理研究院核物理与化学研究所 | A kind of neutron detector collecting principle based on fission electronics |
| CN106199679B (en) * | 2016-08-24 | 2022-10-28 | 中国工程物理研究院核物理与化学研究所 | Neutron detector based on fission-electron collection principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Dongfeng Inventor after: Wei Guohai Inventor after: Wu Liqi Inventor after: Li Junhong Inventor after: Xiao Hongwen Inventor after: Li Meijuan Inventor after: Wu Zhanhua Inventor after: Yu Zhouxiang Inventor after: Liu Yuntao Inventor after: Wang Yu Inventor after: Wang Hongli Inventor after: Han Songbai Inventor after: Hao Lijie Inventor after: Wu Meimei Inventor after: Sun Kai Inventor after: He Linfeng Inventor before: Wang Yu Inventor before: Liu Yuntao Inventor before: Wang Hongli Inventor before: Han Songbai Inventor before: Hao Lijie Inventor before: Wu Meimei Inventor before: He Linfeng Inventor before: Wei Guohai Inventor before: Yu Zhouxiang Inventor before: Chen Dongfeng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG YU WANG HONGLI HAN SONGBAI HAO LIJIE WU MEIMEI HE LINFENG WEI GUOHAI YU ZHOUXIANG CHEN DONGFENG LIU YUNTAO TO: CHEN DONGFENG LIU YUNTAO WANG YU WANG HONGLI HAN SONGBAI HAO LIJIE WU MEIMEI SUN KAI HE LINFENG WEI GUOHAI WU LIQI LI JUNHONG XIAO HONGWEN LI MEIJUAN WU ZHANHUA YU ZHOUXIANG |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120502 Effective date of abandoning: 20140625 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120502 Effective date of abandoning: 20140625 |
|
| RGAV | Abandon patent right to avoid regrant |