CN112837841A - Single-energy neutron selector slit packet and neutron selection structure thereof - Google Patents
Single-energy neutron selector slit packet and neutron selection structure thereof Download PDFInfo
- Publication number
- CN112837841A CN112837841A CN202110090976.2A CN202110090976A CN112837841A CN 112837841 A CN112837841 A CN 112837841A CN 202110090976 A CN202110090976 A CN 202110090976A CN 112837841 A CN112837841 A CN 112837841A
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- Prior art keywords
- neutron
- selector
- slit
- absorption layer
- packet
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 239000011888 foil Substances 0.000 claims abstract description 6
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 229920006335 epoxy glue Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 4
- 229910000748 Gd alloy Inorganic materials 0.000 claims description 3
- FGUJWQZQKHUJMW-UHFFFAOYSA-N [AlH3].[B] Chemical compound [AlH3].[B] FGUJWQZQKHUJMW-UHFFFAOYSA-N 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
- G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
- G21K1/043—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers changing time structure of beams by mechanical means, e.g. choppers, spinning filter wheels
Abstract
The invention relates to the technical field of a single-energy neutron selector, in particular to a slit packet of the single-energy neutron selector and a neutron selection structure of the slit packet. The invention discloses a slit packet of a single-energy neutron selector and a neutron selection structure thereof, which comprise two forming clamping plates, and a channel layer and an absorption layer which are positioned between the two forming clamping plates, wherein the channel layer and the absorption layer are alternately connected in a laminated manner; the absorption layer is Gd-20Zr alloy foil or an aluminum-based boron carbide sheet, and the channel layer is 6061 or 7075 high-strength aluminum alloy. The slit packet of the single-energy neutron selector and the neutron selection structure thereof have high strength and stable structure, can rotate at high speed and enable neutrons to have good trafficability.
Description
Technical Field
The invention relates to the technical field of a single-energy neutron selector, in particular to a slit packet of the single-energy neutron selector and a neutron selection structure of the slit packet.
Background
A monoenergetic neutron selector is a device used to select a neutron beam of a given energy. The neutron extracting device generally comprises a rotating body and a shell, wherein in order to ensure that neutrons with the wavelength meeting the requirements can be selected, the performance of the rotating body is ensured on the premise of high-speed operation, continuous and stable operation and accurate control of the rotating speed, and the rotating speed needs to reach 36000rpm to the maximum. The rotor needs to be provided with the slit package that can intermittent type nature through the neutron, and current slit package can't compromise high-speed rotatory and make the neutron have good trafficability characteristic.
Disclosure of Invention
The invention aims to provide a slit packet of a single-energy neutron selector and a neutron selection structure thereof aiming at the defects of the prior art, and the problem can be solved.
In order to achieve the purpose, the single-energy neutron selector slit packet comprises two molding clamping plates, and a channel layer and an absorption layer which are arranged between the two molding clamping plates, wherein the absorption layer is made of a material capable of absorbing neutrons, the channel layer is made of a material capable of penetrating neutrons, and the two molding clamping plates are used for connecting the channel layer and the absorption layer which are alternately stacked in a pressing mode.
Further, according to the single-energy neutron selector slit packet, the channel layer and the absorption layer are of a plane structure or a cambered surface structure.
Further, according to the single-energy neutron selector slit packet, the two forming clamp plates are used for connecting the plurality of channel layers and the absorption layer in a combined mode through bolts.
Further, according to the single-energy neutron selector slit packet provided by the invention, the channel layer is any one of 6061 or 7075 high-strength aluminum alloy sheets and monocrystalline silicon sheets.
Furthermore, the absorption layer of the single-energy neutron selector slit packet is10B-epoxy glue film,10B/Gd/Gd2O3The obtained film is enriched10B, boron-aluminum alloy sheet,Any one of an aluminum-based boron carbide sheet, a Gd-20Zr alloy foil or a gadolinium alloy foil.
Furthermore, according to the single-energy neutron selector slit packet, the absorption layer is of a layered structure formed by uniformly attaching an absorption material to the channel layer in a sputtering coating, epoxy glue bonding or stacking mode.
The neutron selection structure of the single-energy neutron selector comprises the slit packet and a vacuum seal cavity, wherein the slit packet is rotatably arranged in the vacuum seal cavity, neutron beam windows are correspondingly arranged on the front side and the rear side of the vacuum seal cavity, an aluminum window frame is arranged in each neutron beam window, and an aluminum film is arranged in each aluminum window frame; the slit packet is driven to rotate by the motor assembly.
Furthermore, in the neutron selection structure of the single-energy neutron selector, the thickness of the aluminum film is less than 1 mm.
Furthermore, in the neutron selection structure of the single-energy neutron selector, the vacuum seal cavity is made of the superhard aluminum alloy material.
The invention has the beneficial effects that: the slit packet of the single-energy neutron selector comprises two molding clamping plates, and a channel layer and an absorption layer which are arranged between the two molding clamping plates, wherein the absorption layer is made of a material capable of absorbing neutrons, the channel layer is made of a material capable of penetrating neutrons, and the two molding clamping plates are used for oppositely pressing and connecting the plurality of alternately laminated channel layers and the absorption layer. The slit packet of the single-energy neutron selector and the neutron selection structure thereof have high strength and stable structure, can rotate at high speed and enable neutrons to have good trafficability.
Drawings
Fig. 1 is a schematic structural diagram of a slot packet of a monoenergetic neutron selector according to the present invention.
Fig. 2 is a schematic structural view of a vacuum sealed chamber of a neutron selection structure of the monoenergetic neutron selector of the invention.
Fig. 3 is a schematic perspective view of the channel layer and the absorbing layer of the present invention having an arc structure.
The reference numerals include:
1-shaped splint 2-channel layer 3-absorbing layer
4-vacuum sealed cavity 5-aluminum window frame 6-aluminum film.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1, the single-energy neutron selector slit packet of the invention comprises two molding splints 1 and a channel layer 2 and an absorption layer 3 positioned between the two molding splints 1, wherein the absorption layer 3 is made of a material capable of absorbing neutrons, the channel layer 2 is made of a material capable of transmitting neutrons, and the two molding splints 1 are used for connecting a plurality of alternately laminated channel layers 2 and absorption layers 3 in a pressing mode. The slit packet of the single-energy neutron selector has high strength and stable structure, can rotate at high speed, and enables neutrons to have good trafficability. The two molding splints 1 are mainly used as skeletons of the slit packet for supporting and are required to have a small neutron reaction section so as to reduce the loss of neutron beam current flowing through as much as possible. The channel layer 2 and the absorption layer 3 are bonded together in a physical form, and then are radially plugged into a shaft and fixed by bolts, the slit packet is driven by a motor to rotate, a plurality of slits formed by stacking the channel layer 2 and the absorption layer 3 in the rotating process are opened for a short time in the direction opposite to the beam current, neutrons can only pass through the channel layer 2 in the opening time, neutrons with other wavelengths are blocked and absorbed by the absorption layer 2 in the slit packet, and the neutrons are selected.
As shown in fig. 1 and 3, in the single-energy neutron selector slit packet of the present invention, the channel layer 2 and the absorption layer 3 are of a planar structure or an arc structure, and particularly, the channel layer 2 and the absorption layer 3 of the arc structure are preferably suitable for passing neutrons during a high-speed rotation process.
Specifically, according to the single-energy neutron selector slit packet, the two molding clamp plates 1 are used for connecting and fastening the channel layers 2 and the absorption layers 3 in a pressing mode through bolts.
Further, in the single-energy neutron selector slit packet of the invention, the channel layer 2 is any one of a 6061 or 7075 high-strength aluminum alloy sheet and a monocrystalline silicon sheet.
Furthermore, the invention discloses a single-energy neutron selector slit packetThe absorption layer 3 is10B-epoxy glue film,10B/Gd/Gd2O3The obtained film is enriched10B, any one of boron-aluminum alloy sheets, aluminum-based boron carbide sheets, Gd-20Zr alloy foils or gadolinium alloy foils.
According to the single-energy neutron selector slit packet, the absorption layer 3 is of a layered structure formed by uniformly attaching absorption materials to the channel layer 2 in a sputtering coating, epoxy glue bonding or stacking mode. According to the single-energy neutron selector slit packet, the absorption layer 3 is of a layered structure formed by uniformly attaching the absorption material to the channel layer 2 in a sputtering coating mode, and the single-energy neutron selector slit packet is suitable for producing high-quality slit packets.
Specifically, according to the single-energy neutron selector slit packet provided by the invention, the edges of the channel layer 2 and the absorption layer 3 are provided with alignment notches. The slit packet of the single-energy neutron selector further improves the strength and the structural stability, can rotate at high speed and enables neutrons to have good trafficability.
Further, according to the single-energy neutron selector slit packet, the two molding clamping plates 1 are used for connecting the channel layers 2 and the absorption layers 3 in a pressing mode through bolts.
As shown in fig. 2, the neutron selection structure of the single-energy neutron selector of the invention comprises the slit packet of the invention and a vacuum sealed cavity 4, wherein the slit packet is rotatably arranged in the vacuum sealed cavity 4, neutron beam windows are correspondingly arranged on the front side and the rear side of the vacuum sealed cavity 4, an aluminum window frame 5 is arranged in each neutron beam window, and an aluminum film 6 is arranged in each aluminum window frame 5. The aluminum film 6 is used as a channel for neutron beam to pass through the Fermi chopper to play a role in vacuum sealing. The effective size of the beam window is larger than the size of the beam current, and the allowance of the single side is 5 mm. The thickness of the aluminum film 6 may be 0.5 mm. The neutron selection structure of the monoenergetic neutron selector can dynamically select monochromatic neutrons with different energies and resolutions by adjustment
Further, in the neutron selection structure of the single-energy neutron selector, the thickness of the aluminum film 6 is less than 1 mm. Further, in the neutron selection structure of the single-energy neutron selector, the vacuum seal cavity 4 is made of an ultra-hard aluminum alloy material.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the performance of the prior art and has practicability, and becomes a product with practical value.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (9)
1. Monoenergetic neutron selector slit package, its characterized in that: the neutron absorption device comprises two molding clamping plates, and a channel layer and an absorption layer which are arranged between the two molding clamping plates, wherein the absorption layer is made of a material capable of absorbing neutrons, the channel layer is made of a material capable of penetrating neutrons, and the two molding clamping plates are used for oppositely pressing and connecting the plurality of alternately laminated channel layers and the absorption layer.
2. The single energy neutron selector slot pack of claim 1, wherein: the channel layer and the absorption layer are in a plane structure or an arc surface structure.
3. The single energy neutron selector slot pack of claim 1, wherein: the two molding jaws join the plurality of channel layers and the absorbent layer together by bolts.
4. The single energy neutron selector slot pack of claim 1, wherein: the channel layer is any one of 6061 or 7075 high-strength aluminum alloy sheets and monocrystalline silicon sheets.
5. The single energy neutron selector slot pack of claim 1, wherein: the absorption layer is10B-epoxy glue film,10B/Gd/Gd2O3The obtained film is enriched10B in boron-aluminum alloy sheet, aluminum-based boron carbide sheet, Gd-20Zr alloy foil or gadolinium alloy foilAny one of (1).
6. The single energy neutron selector slot pack of claim 5, wherein: the absorption layer is a layered structure formed by uniformly attaching absorption materials on the channel layer in a sputtering coating, epoxy glue bonding or stacking mode.
7. Neutron selective structure of monoenergetic neutron selector, its characterized in that: the slit packet comprises the slit packet as claimed in any one of claims 1 to 4, and further comprises a vacuum seal cavity, wherein the slit packet is rotatably arranged in the vacuum seal cavity, neutron beam windows are correspondingly arranged on the front side and the rear side of the vacuum seal cavity, aluminum window frames are arranged in the neutron beam windows, and aluminum films are arranged in the aluminum window frames; the slit packet is driven to rotate by the motor assembly.
8. The neutron selection structure of the monoenergetic neutron selector of claim 7, wherein: the thickness of the aluminum film is less than 1 mm.
9. The neutron selection structure of the monoenergetic neutron selector of claim 7, wherein: the vacuum sealing cavity is made of an ultra-hard aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090976.2A CN112837841A (en) | 2021-01-22 | 2021-01-22 | Single-energy neutron selector slit packet and neutron selection structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090976.2A CN112837841A (en) | 2021-01-22 | 2021-01-22 | Single-energy neutron selector slit packet and neutron selection structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112837841A true CN112837841A (en) | 2021-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110090976.2A Pending CN112837841A (en) | 2021-01-22 | 2021-01-22 | Single-energy neutron selector slit packet and neutron selection structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112837841A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0534535A1 (en) * | 1991-09-25 | 1993-03-31 | Laboratoires D'electronique Philips | Device including a mirror operating in the field of X-rays or neutrons |
| JPH0659097A (en) * | 1992-08-10 | 1994-03-04 | Seiko Seiki Co Ltd | Neutron chopper |
| US6307917B1 (en) * | 1998-09-28 | 2001-10-23 | Rigaku Corporation | Soller slit and X-ray apparatus |
| JP2005300487A (en) * | 2004-04-16 | 2005-10-27 | Kobe Steel Ltd | Neutron disc chopper |
| JP2007303909A (en) * | 2006-05-10 | 2007-11-22 | Japan Atomic Energy Agency | Method of highly efficiently measuring pulse neutron non-elastic scattering experiment |
| US20090121161A1 (en) * | 2007-08-28 | 2009-05-14 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Neutron chopper |
| JP2010025902A (en) * | 2008-07-24 | 2010-02-04 | High Energy Accelerator Research Organization | Chopper spectrograph and rotation control unit |
| CN203422938U (en) * | 2012-11-20 | 2014-02-05 | 中国工程物理研究院核物理与化学研究所 | Neutron radial collimator |
| CN109813740A (en) * | 2019-03-19 | 2019-05-28 | 东莞理工学院 | A kind of narrow slit structure of maskable neutron |
-
2021
- 2021-01-22 CN CN202110090976.2A patent/CN112837841A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0534535A1 (en) * | 1991-09-25 | 1993-03-31 | Laboratoires D'electronique Philips | Device including a mirror operating in the field of X-rays or neutrons |
| JPH0659097A (en) * | 1992-08-10 | 1994-03-04 | Seiko Seiki Co Ltd | Neutron chopper |
| US6307917B1 (en) * | 1998-09-28 | 2001-10-23 | Rigaku Corporation | Soller slit and X-ray apparatus |
| JP2005300487A (en) * | 2004-04-16 | 2005-10-27 | Kobe Steel Ltd | Neutron disc chopper |
| JP2007303909A (en) * | 2006-05-10 | 2007-11-22 | Japan Atomic Energy Agency | Method of highly efficiently measuring pulse neutron non-elastic scattering experiment |
| US20090121161A1 (en) * | 2007-08-28 | 2009-05-14 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Neutron chopper |
| JP2010025902A (en) * | 2008-07-24 | 2010-02-04 | High Energy Accelerator Research Organization | Chopper spectrograph and rotation control unit |
| CN203422938U (en) * | 2012-11-20 | 2014-02-05 | 中国工程物理研究院核物理与化学研究所 | Neutron radial collimator |
| CN109813740A (en) * | 2019-03-19 | 2019-05-28 | 东莞理工学院 | A kind of narrow slit structure of maskable neutron |
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