CN108169263A - A kind of glancing incidence experimental provision for neutron small angle scattering - Google Patents
A kind of glancing incidence experimental provision for neutron small angle scattering Download PDFInfo
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- CN108169263A CN108169263A CN201810261529.7A CN201810261529A CN108169263A CN 108169263 A CN108169263 A CN 108169263A CN 201810261529 A CN201810261529 A CN 201810261529A CN 108169263 A CN108169263 A CN 108169263A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/201—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials by measuring small-angle scattering
- G01N23/202—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials by measuring small-angle scattering using neutrons
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Abstract
The invention discloses a kind of glancing incidence experimental provisions for neutron small angle scattering.The experimental provision includes collimator assembly, fixed pedestal, depth scan limit tread assembly, various dimensions moving parts, sample stage component.The reflecting experimental geometry that the experimental provision uses realizes the measurement of film sample small-angle scattering signal, and the limit tread assembly that the limit beam hole position of use and size are continuously adjusted realizes the depth scan of large scale machine parts surface layer small-angle scattering signal.The present invention's uses for the glancing incidence experimental provision cooperation neutron small angle scattering spectrometer of neutron small angle scattering, the small-angle neutron scattering signal on film sample inside and big mechanical part surface layer can effectively be measured, the depth scan of the nearly surface structure of big mechanical part can be realized simultaneously, there is simple in structure, dependable performance, application prospect is extensive.
Description
Technical field
Environment loading technique field in being applied the invention belongs to neutron small angle scattering, and in particular to one kind is small for neutron
The glancing incidence experimental provision of angle scattering.
Background technology
Neutron small angle scattering is a kind of effective means of lossless depth detection, nanometer in detectable solid-state or Liquid Systems
To the structural information of submicron-scale, all there is important meaning for material science, bio-pharmaceuticals, physical study, engineer application etc.
Justice.Using transmission geometry, measuring signal is closely related with thickness of sample, therefore is difficult to measure in film sample for conventional small angle experiment
Portion and mechanical part surface structure feature.Glancing incidence neutron small angle scattering refers to neutron with the angle of very little, i.e. material critical
Angle near angle is incident on the small angle scattering signal of sample surfaces generation, as a result of reflection geometry, therefore can survey
Nanometer and submicron-scale structural information and the structure change of large scale machine parts depth direction in amount film sample is special
Sign.
Small-angle neutron scattering technology is in the starting stage at home, and corresponding various technology development are still short of.In
State's patent documentation discloses entitled《A kind of cold and hot of vacuum for Grazing Incidence X-Ray small-angle scattering experiment》（Publication number：
CN106979957A）Patent application, which provides a kind of glancing incidence experiment suitable for the small angle of X ray and measures dress
It puts, but since X ray and neutron have very big difference, during collimation, shielding and the overall structure of the invention are not all suitable for
Sub- small-angle scattering.
Invention content
The technical problems to be solved by the invention are to provide a kind of glancing incidence experimental provision for neutron small angle scattering.
The glancing incidence experimental provision for neutron small angle scattering of the present invention, its main feature is that, the experimental provision includes
Collimator assembly, fixed pedestal, depth scan limit tread assembly, various dimensions moving parts and sample stage component；
The collimator assembly includes source diaphragm, vacuum flight chamber and the sample diaphragm of same level axis, and vacuum flight chamber is level
The closed vacuum chamber placed, arrival end window installation source diaphragm, port of export window installation sample diaphragm；
The depth scan limit tread assembly includes incident beam beam limiting device and emerging beam beam limiting device；The fixed pedestal
Upper surface is plane, and upper surface is equipped with various dimensions moving parts, and incident beam beam limiting device and emerging beam beam limiting device are symmetrically pacified
Mounted in the both sides of various dimensions moving parts, sample stage component is fixed on above various dimensions moving parts；
The various dimensions moving parts include transverse direction, longitudinal direction, the three-dimensional translating device of vertical direction and around lateral shaft, around longitudinal direction
Axis, the There Axis Turn Table around vertical axis；The sample stage component includes sample fixing device and is coated on sample fixation dress
Put the composite shielding layer of outer surface；The outer surface cladding neutron shielding material of the collimator assembly, depth scan limit tread assembly；
The course of work of the experimental provision is as follows：
Neutron beam after vacuum flight chamber, is pierced by, then be incident to through incident beam beam limiting device from the incidence of source diaphragm from sample diaphragm
The neutron beam of the sample surfaces of sample stage component, superficial reflex or transmission in sample, reflection or transmission is got one's things ready from emerging beam limit
It puts and neutron detector is reached after being pierced by.
The arrival end window and port of export window material of the vacuum flight chamber are sapphire or metallic aluminium.
The vacuum flight chamber is equipped with neutron guide tube, and the quantity of neutron guide tube is adjustable.
The incident beam beam limiting device and the center of the limit beam hole of emerging beam beam limiting device and size are continuously adjusted.
The translation precision of the various dimensions moving parts is better than 0.1 mm, and rotation precision is better than 0.05o。
The sample fixing device of the sample stage component is horizontal fixture or vertical fixing device.
The composite shielding layer of the sample stage component includes neutron shield layer and gamma rays shielded layer.
The neutron shielding material for Cd, Gd,10B、6One or more kinds of composite materials in Li.
Collimating components in the glancing incidence experimental provision for neutron small angle scattering of the present invention rely on common neutron
Small-angle scattering spectrometer, rear and front end increase specific diaphragm piece, by adjust the length of neutron guide tube of access realize collimation away from
From adjusting.Fixed pedestal, depth scan limit tread assembly, various dimensions moving parts and sample stage component are assembled into an entirety,
It is whole during the experiment to be positioned at the sample stage of neutron small angle scattering spectrometer, have no effect on conventional neutron small angle scattering experiment
Development.
The present invention the glancing incidence experimental provision for neutron small angle scattering by the way that transmission optics are changed into reflection optics,
The application range of neutron small angle scattering experiment is improved, makes it that can effectively measure inside film sample and big mechanical part surface layer
Small-angle neutron scattering signal, while can realize the depth scan of the nearly surface structure of big mechanical part, before having a wide range of applications
Scape.The present invention's has the characteristics that simple in structure, dependable performance for the glancing incidence experimental provision of neutron small angle scattering.
Description of the drawings
Fig. 1 is the structure diagram of the glancing incidence experimental provision for neutron small angle scattering of the present invention；
Fig. 2 is the vertical view of the embodiment 1 of the glancing incidence experimental provision for neutron small angle scattering of the present invention；
Fig. 3 is the front view of the embodiment 1 of the glancing incidence experimental provision for neutron small angle scattering of the present invention；
Fig. 4 is the left view of the embodiment 1 of the glancing incidence experimental provision for neutron small angle scattering of the present invention；
Fig. 5 is the various dimensions moving parts of the embodiment 1 of the glancing incidence experimental provision for neutron small angle scattering of the present invention
Front view；
Fig. 6 is the sample stage assembly plan view of the embodiment 1 of the glancing incidence experimental provision for neutron small angle scattering of the present invention；
Fig. 7 is the sample stage assembly plan view of the embodiment 2 of the glancing incidence experimental provision for neutron small angle scattering of the present invention；
In figure, 0. neutron beam, 11. source diaphragm, 12. vacuum flight chamber, 121. neutron guide tube, 13. sample diaphragm 2. is solid
It is right to determine the horizontal limit beam of plug-in strip 312. on the left of the horizontal limit beam of 31. incident beam beam limiting device of pedestal, 310. fixing bracket 311.
Limit beam upside plug-in strip 314. limits 32. emerging beam beam limiting device of plug-in strip, 4. multidimensional on the downside of beam to side plug-in strip 313. vertically vertically
41. transverse translation component of moving parts, 42. longitudinal translation component, 43. vertical translation component 44. is spent to rotate around horizontal axis
Component 45. is around longitudinal axis runner assembly 46. around 5. sample stage component of vertical axis runner assembly, 51. internal cavities 52.
External 53. external 54. sample of vacuum hose of composite shielding layer adsorbs duct.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Following embodiment is only the further explanation to the present invention, and be should not be taken as limiting the scope of the invention.It is all
It is some nonessential modifications and adaptations that the above according to the present invention is made, still belongs to the scope of protection of the present invention.
As shown in Figure 1, the glancing incidence experimental provision for neutron small angle scattering of the present invention includes collimator assembly, fixed base
Seat 2, depth scan limit tread assembly, various dimensions moving parts 4 and sample stage component 5；
The collimator assembly includes source diaphragm 11, vacuum flight chamber 12 and the sample diaphragm 13 of same level axis, vacuum flight chamber
12 be horizontal positioned closed vacuum chamber, and arrival end window installs source diaphragm 11, port of export window installation sample diaphragm 13；
The depth scan limit tread assembly includes incident beam beam limiting device 31 and emerging beam beam limiting device 32；The fixation base
The upper surface of seat 2 is plane, and upper surface is equipped with various dimensions moving parts 4, and incident beam beam limiting device 31 and emerging beam limit are got one's things ready
32 both sides for being symmetrically mounted on various dimensions moving parts 4 are put, sample stage component 5 is fixed on above various dimensions moving parts 4；
The various dimensions moving parts 4 include transverse direction, longitudinal direction, the three-dimensional translating device of vertical direction and around lateral shaft, around indulge
To axis, around the There Axis Turn Table of vertical axis；The sample stage component 5 includes sample fixing device and is coated on sample and fixes
The composite shielding layer in outside of deivce face；The outer surface cladding neutron shield material of the collimator assembly, depth scan limit tread assembly
Material；
The course of work of the experimental provision is as follows：
Neutron beam is incident from source diaphragm 11, after vacuum flight chamber 12, is pierced by from sample diaphragm 13, then through incident beam beam limiting device
31 are incident to the sample surfaces of sample stage component 5, superficial reflex or transmission in sample, and the neutron beam of reflection or transmission is from outgoing
Beam beam limiting device 32 reaches neutron detector after being pierced by.
The arrival end window and port of export window material of the vacuum flight chamber 12 are sapphire or metallic aluminium.
The vacuum flight chamber 12 is equipped with neutron guide tube, and the quantity of neutron guide tube is adjustable.
The incident beam beam limiting device 31 and the center of the limit beam hole of emerging beam beam limiting device 32 and size are continuous
It is adjustable.
The translation precision of the various dimensions moving parts 4 is better than 0.1 mm, and rotation precision is better than 0.05o。
The sample fixing device of the sample stage component 5 is horizontal fixture or vertical fixing device.
The composite shielding layer of the sample stage component 5 includes neutron shield layer and gamma rays shielded layer.
The neutron shielding material for Cd, Gd,10B、6One or more kinds of composite materials in Li.
Embodiment 1
As shown in Fig. 2-Fig. 6, in the present embodiment 0 be neutron beam, 11 diameter of source diaphragm, 4 mm, 13 diameter of sample diaphragm, 2 mm,
12 length of vacuum flight chamber is 11 m, 2 m of inside access neutron guide tube 121 length, obtains the m of collimator distance 11-2=9.
In the present embodiment, the incident beam beam limiting device 31 and emerging beam beam limiting device 32 pass through fixing bracket 310
It is connected on fixed pedestal 2, the two is made of four blade four-drive devices of self-movement, including plug-in strip on the left of level limit beam
311st, it is horizontal to limit plug-in strip 313 on the upside of beam right side plug-in strip 312, vertically limit beam and limit beam downside plug-in strip 314 vertically.
In the present embodiment, the various dimensions sports platform component 4 includes sextuple moving parts, from bottom to top successively
For transverse translation component 41, longitudinal translation component 42, vertical translation component 43, around horizontal axis runner assembly 44, around longitudinal axis rotating group
Part 45 and around vertical axis runner assembly 46.
In the present embodiment, the sample stage component 5 is made of internal cavities 51 and external composite shielding layer 52, external
Composite shielding layer 52 is followed successively by 50 mm thickness aluminum frames, 5 mm thickness lead screen layers and 3 mm thickness cadmium shields from inside to outside
Layer.Internal cavities 51 connect mechanical pump, while adsorb duct 54 and air communication by sample by external vacuum hose 53.Sample
When product are placed in sample stage 5 upper surface of component, mechanical pump is opened, so as to securely adsorb sample on 5 surface of sample stage component.
In the present embodiment, ensure sample surfaces and level by pitchpiston component 44 and around longitudinal axis component 45
Face is parallel, and transverse translation component 41, longitudinal translation component 42, vertical translation component 43 ensure that sample upper surface and neutron beam 0 are right
Together.During the experiment, pass through the incidence angle of rotational angle control neutron beam 0 and sample surfaces around longitudinal axis runner assembly 45
Degree.
Embodiment 2
The embodiment of the present embodiment is substantially the same manner as Example 1, and the difference lies in the sample stage of the present embodiment is suitable for surveying
Perpendicular to the sample of horizontal plane, Fig. 7 show the vertical view of sample stage component 5 in scale face.The bottom of sample stage component 5 is fixed on
The upper surface of various dimensions moving parts 4 is simultaneously translated or is rotated therewith, and incident neutron beam 0 and the incidence angle of sample surfaces are big
The small rotational angle control by around vertical axis runner assembly 46.
Claims (8)
1. a kind of glancing incidence experimental provision for neutron small angle scattering, which is characterized in that the experimental provision includes collimation
Component, fixed pedestal（2）, depth scan limit tread assembly, various dimensions moving parts（4）With sample stage component（5）；
The collimator assembly includes the source diaphragm of same level axis（11）, vacuum flight chamber（12）With sample diaphragm（13）, vacuum
Flight cavity（12）For horizontal positioned closed vacuum chamber, arrival end window installation source diaphragm（11）, port of export window installation sample
Product diaphragm（13）；
The depth scan limit tread assembly includes incident beam beam limiting device（31）With emerging beam beam limiting device（32）；Described consolidates
Determine pedestal（2）Upper surface for plane, upper surface is equipped with various dimensions moving parts（4）, incident beam beam limiting device（31）With go out
Beam beam limiting device（32）It is symmetrically mounted on various dimensions moving parts（4）Both sides, sample stage component（5）It is fixed on various dimensions fortune
Dynamic component（4）Above；
The various dimensions moving parts（4）Comprising transverse direction, longitudinal direction, the three-dimensional translating device of vertical direction and around lateral shaft, around
Longitudinal axis, the There Axis Turn Table around vertical axis；The sample stage component（5）Including sample fixing device and it is coated on sample
The composite shielding layer of fixing device outer surface；The outer surface cladding neutron screen of the collimator assembly, depth scan limit tread assembly
Cover material.
2. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：Described is true
Empty flight cavity（12）Arrival end window and port of export window material be sapphire or metallic aluminium.
3. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：Described is true
Empty flight cavity（12）Neutron guide tube is installed, the quantity of neutron guide tube is adjustable.
4. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：Described enters
Beam beam limiting device（31）With emerging beam beam limiting device（32）Limit beam hole center and size be continuously adjusted.
5. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：Described is more
Dimension moving parts（4）Translation precision better than 0.1 mm, rotation precision is better than 0.05o。
6. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：The sample
Sample platform component（5）Sample fixing device be horizontal fixture or vertical fixing device.
7. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：The sample
Sample platform component（5）Composite shielding layer include neutron shield layer and gamma rays shielded layer.
8. the glancing incidence experimental provision according to claim 1 for neutron small angle scattering, it is characterised in that：In described
Sub- shielding material for Cd, Gd,10B、6One or more kinds of composite materials in Li.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810261529.7A CN108169263B (en) | 2018-03-28 | 2018-03-28 | Grazing incidence experimental device for neutron small-angle scattering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810261529.7A CN108169263B (en) | 2018-03-28 | 2018-03-28 | Grazing incidence experimental device for neutron small-angle scattering |
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| Publication Number | Publication Date |
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| CN108169263A true CN108169263A (en) | 2018-06-15 |
| CN108169263B CN108169263B (en) | 2023-05-05 |
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| CN201810261529.7A Active CN108169263B (en) | 2018-03-28 | 2018-03-28 | Grazing incidence experimental device for neutron small-angle scattering |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110109173A (en) * | 2019-05-24 | 2019-08-09 | 东莞中子科学中心 | A kind of neutron insertion piece system that quick installation remote adjustment can be achieved |
| CN110146527A (en) * | 2019-07-01 | 2019-08-20 | 哈尔滨工业大学 | A kind of pitch three-dimensional microstructures based on small-angle neutron scattering technology determine method |
| CN110567997A (en) * | 2019-10-11 | 2019-12-13 | 中国科学院上海应用物理研究所 | vacuum cavity assembly for scattering experiment station |
| CN113204110A (en) * | 2021-05-07 | 2021-08-03 | 中国原子能科学研究院 | Neutron bicrystal monochromator and monochromatic neutron detection system |
| CN114518376A (en) * | 2022-02-18 | 2022-05-20 | 中国核动力研究设计院 | Electronic probe shielding sample seat of radioactive sample |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110109173A (en) * | 2019-05-24 | 2019-08-09 | 东莞中子科学中心 | A kind of neutron insertion piece system that quick installation remote adjustment can be achieved |
| CN110146527A (en) * | 2019-07-01 | 2019-08-20 | 哈尔滨工业大学 | A kind of pitch three-dimensional microstructures based on small-angle neutron scattering technology determine method |
| CN110567997A (en) * | 2019-10-11 | 2019-12-13 | 中国科学院上海应用物理研究所 | vacuum cavity assembly for scattering experiment station |
| CN113204110A (en) * | 2021-05-07 | 2021-08-03 | 中国原子能科学研究院 | Neutron bicrystal monochromator and monochromatic neutron detection system |
| CN114518376A (en) * | 2022-02-18 | 2022-05-20 | 中国核动力研究设计院 | Electronic probe shielding sample seat of radioactive sample |
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| Publication number | Publication date |
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| CN108169263B (en) | 2023-05-05 |
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