CN209387555U - A kind of device for neutron scattering experiment - Google Patents
A kind of device for neutron scattering experiment Download PDFInfo
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- CN209387555U CN209387555U CN201822061451.2U CN201822061451U CN209387555U CN 209387555 U CN209387555 U CN 209387555U CN 201822061451 U CN201822061451 U CN 201822061451U CN 209387555 U CN209387555 U CN 209387555U
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- sapphire sheet
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- 238000002474 experimental method Methods 0.000 title claims abstract description 23
- 238000001956 neutron scattering Methods 0.000 title claims abstract description 22
- 229910052594 sapphire Inorganic materials 0.000 claims abstract description 108
- 239000010980 sapphire Substances 0.000 claims abstract description 108
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 34
- 238000003384 imaging method Methods 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000005286 illumination Methods 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- 239000001307 helium Substances 0.000 claims description 6
- 229910052734 helium Inorganic materials 0.000 claims description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 229910052754 neon Inorganic materials 0.000 claims description 5
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 5
- 241001062009 Indigofera Species 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 239000010437 gem Substances 0.000 claims description 2
- 229910001751 gemstone Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 8
- 238000011065 in-situ storage Methods 0.000 abstract description 5
- 238000012634 optical imaging Methods 0.000 abstract description 3
- 238000002834 transmittance Methods 0.000 abstract description 3
- 238000011835 investigation Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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- 235000009566 rice Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
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Abstract
The utility model relates to investigation of materials fields, a kind of device for neutron scattering experiment, including air chamber, pressurized equipment, high pressure chest, sample, plano-convex lens, bracket, diaphragm I, window, beam splitter, convex lens I, video camera, diaphragm II, convex lens II, light emitting diode and neutron detector, high pressure chest includes high-pressure chamber, pressure piston, fixing end, sapphire sheet I and sapphire sheet II, high-pressure chamber is hollow cube structure, including through-hole I, central channel and through-hole II three parts, through-hole I and through-hole II is truncated cone-shaped through-hole, enabled using special high pressure chest and is preferably suitable for neutron scattering experiment while applying pressure to sample, with biggish neutron transmitance and optical transmittance, the optical imaging method of special designing makes it possible to divide sample outside air chamber The higher imaging of resolution, to monitor the state of sample, replacement sample flow is simple, and pressure adjustment step in situ is easy, high reliablity, long service life.
Description
Technical field
The utility model relates to investigation of materials field, especially a kind of one for the neutron scattering experiment of sample under high pressure
Kind is used for the device of neutron scattering experiment.
Background technique
Certain characteristics of research material are of great significance with the variation of impressed pressure, and it is isobaric to generally use top anvil, piston
Power application devices apply pressure to detected materials sample, measurement of correlation are carried out to material in combination with other technologies, as X-ray is spread out
It penetrates, X-ray absorption spectrum, the experimental methods such as neutron scattering, especially combines, can be used in the Neutron scattering technology of low-angle
On-spot study crystal growth, the morphology of nano particle, sintering process of porous ceramic film material etc..Prior art defect one: existing
There is the device sample replacement process in technology complex, and carries out pressure controlled complex steps in situ；Prior art defect
Two: certain experiments need optically the form of observing samples in real time, in the device of the prior art, since low temperature is shut out
Watt, the volumetric constraints of the elements such as air chamber, the operating distance of optical element is usually larger, causes light collection efficiency lower, to sample
The imaging resolution of product is lower, it is more difficult to which the state of judgement sample, a kind of device for neutron scattering experiment are able to solve
Problem.
Utility model content
To solve the above-mentioned problems, the utility model is using special high pressure chest come so that stressed same applying to sample
When can preferably be suitable for neutron scattering experiment, there is biggish neutron transmitance and optical transmittance, in addition using special
The optical imaging method of design makes it possible to carry out the higher imaging of resolution ratio to sample outside air chamber.
The technical scheme adopted by the utility model is
A kind of device for neutron scattering experiment includes that air chamber, pressurized equipment, high pressure chest, sample, plano-convex are saturating
Mirror, bracket, diaphragm I, window, beam splitter, convex lens I, video camera, diaphragm II, convex lens II, light emitting diode and neutron detection
Device, xyz are three-dimensional coordinate system, and helium, neon or argon gas can be filled in air chamber, and pressure range is 100 bars to 600
Bar, high pressure chest is located in air chamber, and plano-convex lens and diaphragm I are installed below the high pressure chest in air chamber by bracket, plano-convex
Lens are located above diaphragm I, and the position of plano-convex lens and diaphragm I can be adjusted by bracket, has piston hole above high pressure chest,
With there is through-hole above the air chamber of piston hole corresponding position, there is below air chamber window, window can light transmission, air chamber
Side has transmission window, and neutron beam can enter by the transmission window or leave air chamber, and beam splitter, is taken the photograph convex lens I
Camera, diaphragm II, convex lens II and light emitting diode are respectively positioned on the lower section outside air chamber, light emitting diode, convex lens II, diaphragm
II, beam splitter, window, diaphragm I, plano-convex lens and fixing end form illumination path, and the illumination light of light emitting diode transmitting can
After passing sequentially through convex lens II, diaphragm II, beam splitter, window, diaphragm I, plano-convex lens and fixing end, it is mapped on sample, it is fixed
End, plano-convex lens, diaphragm I, window, beam splitter, convex lens I and video camera form the imaging optical path of sample, the light that sample issues
Fixing end, plano-convex lens, diaphragm I and window can be passed sequentially through, and after beam splitter is biased to, be entered by convex lens I and taken the photograph
Camera；High pressure chest includes that high-pressure chamber, pressure piston, fixing end, sapphire sheet I and sapphire sheet II, pressure piston are pierced by gas
Through-hole above body cavity can simultaneously move up and down, and have air-tightness between pressure piston and air chamber；High-pressure chamber is side length
For 12 millimeters of hollow cube structure, including through-hole I, central channel and through-hole II three parts, through-hole I and through-hole II are circle
Platform shape through-hole, through-hole I and through-hole II coaxial line, axis is by high-pressure chamber center and is parallel to the direction z, the small bore end of through-hole I
Opposite with the small bore end of through-hole II, central channel is located between two small bore ends, and the big nose end of through-hole I and through-hole II distinguish position
In two outsides of high-pressure chamber, sapphire sheet I and sapphire sheet II are respectively positioned in central channel and are the phase parallel with x/y plane
Same two pieces；Central channel and the part contacted sapphire sheet I and sapphire sheet II all have corrugated notch, sapphire sheet I and
It is blue precious in the small bore end abutting of the small bore end abutting of through-hole I, sapphire sheet II and through-hole II, sapphire sheet I and sapphire sheet II
For the crystal axis c-axis of stone each parallel to the direction z, the space between sapphire sheet I and sapphire sheet II is sample room, the sample room
Bottom has fixing end, and the fixing end has elasticity and is fixed on the bottom of high-pressure chamber, fixing end respectively with sapphire sheet I
Connected with sapphire sheet II, fixing end can light transmission, pressure piston can through the through-hole above air chamber be inserted into sample room, sample
The upper end in the region between the lower end and fixing end of pressure piston, pressure piston connects pressurized equipment, is carrying out high-pressure solid
When testing, pressurized equipment drives pressure piston to move down and can apply pressure to sample；High-pressure chamber is made of stainless steel；It is high
Length of the through-hole I of pressure cavity in the direction z is 3 millimeters, top surface diameter is 5 millimeters, basal diameter is 8.4 millimeters, high-pressure chamber
Length of the through-hole II in the direction z be 5 millimeters, top surface diameter is 5 millimeters, basal diameter is 10.8 millimeters；Central channel and indigo plant are precious
Flag I and the corrugated notch of sapphire sheet II contact portion are sinusoidal waveform notch；Sapphire sheet I and sapphire sheet II x,
Y, the length in the direction z is respectively 6 millimeters, 9 millimeters and 1.5 millimeters；Length of the fixing end in the direction y is 5 millimeters.
The step of being tested using a kind of device for neutron scattering experiment are as follows:
Step 1. extracts pressure piston out from sample room, and sample is added into sample room from the piston hole above high pressure chest
Product, then again will be in the lower end insertion sample room of pressure piston；
Step 2. is 100 bars to 600 bars to helium, pressure range is filled in air chamber；
Step 3. pressurized equipment drives pressure piston to move down, and to apply pressure to sample, pressure limit is 100 bars and arrives
1000 bars；
It is 633 nanometers of illumination light that step 4. light emitting diode, which issues wavelength, the illumination light pass sequentially through convex lens II,
After diaphragm II, beam splitter, window, diaphragm I, plano-convex lens and fixing end, it is mapped on sample；
The reflected light that step 5. is formed after sample reflects passes sequentially through fixing end, plano-convex lens, diaphragm I and window,
And after beam splitter is biased to, video camera is entered by convex lens I, by adjusting the position of convex lens I and video camera, Neng Goutong
Cross cameras view to the higher amplification of resolution ratio sample real image；
Step 6. can judge sapphire sheet I and sapphire sheet II with this by the interference figure that records in video camera
Contact compactness between sample, and adjust the pressure that pressurized equipment applies pressure piston；
Step 7. neutron beam passes sequentially through the transmission window of air chamber side, the through-hole I of high pressure chest and indigo plant outside air chamber
Jewel piece I is mapped on sample, passes sequentially through sapphire sheet II, the through-hole II of high pressure chest and air chamber by the neutron that sample scatters
The transmission window of side projects outside air chamber, to be detected by neutron detector；
Step 8. analyzes the information of the scattered neutron of neutron detector acquisition, further studies the phase of sample under high pressure conditions
Close characteristic.
The beneficial effects of the utility model are:
Utility model device can preferably be suitable for neutron scattering experiment, and the process for replacing sample is simple, in situ to press
The step of power is adjusted is easy, high reliablity, long service life, additionally is able to outside air chamber higher to sample progress resolution ratio
Imaging.
Detailed description of the invention
It is further illustrated below with reference to the figure of the utility model:
Fig. 1 is utility model diagram；
Fig. 2 is the sectional view of high pressure chest, and Fig. 3 is the side view of Fig. 2；
Fig. 4 is the A-A sectional view of Fig. 2.
In figure, 1. air chambers, 2. pressurized equipments, 3. high pressure chests, 3-1. high-pressure chamber, 3-2. pressure piston, 3-3. fixed
End, 3-4. sapphire sheet I, 3-5. sapphire sheet II, 4. samples, 5. plano-convex lens, 6. brackets, 7. diaphragm I, 8. windows, 9. points
Beam device, 10. convex lens I, 11. video cameras, 12. diaphragm II, 13. convex lens II, 14. light emitting diodes.
Specific embodiment
If Fig. 1 is utility model diagram, including air chamber (1), pressurized equipment (2), high pressure chest (3), sample (4),
Plano-convex lens (5), bracket (6), diaphragm I (7), window (8), beam splitter (9), convex lens I (10), video camera (11), diaphragm II
(12), convex lens II (13), light emitting diode (14) and neutron detector, xyz are three-dimensional coordinate system, in air chamber (1)
It can be filled with helium, neon or argon gas, pressure range is 100 bars to 600 bars, and high pressure chest (3) is located in air chamber (1), plano-convex
Lens (5) and diaphragm I (7) are installed below the high pressure chest (3) in air chamber (1) by bracket (6), and plano-convex lens (5) are located at
Above diaphragm I (7), the position of plano-convex lens (5) and diaphragm I (7) can be adjusted by bracket (6), high pressure chest (3) has above
Piston hole has through-hole with the air chamber (1) of piston hole corresponding position above, and air chamber (1) has window (8) below, window
(8) can light transmission, the side of air chamber (1) has transmission window, and neutron beam can be entered or be left by the transmission window
Air chamber (1), beam splitter (9), convex lens I (10), video camera (11), diaphragm II (12), convex lens II (13) and light-emitting diodes
Pipe (14) is respectively positioned on the lower section of air chamber (1) outside；Light emitting diode (14), convex lens II (13), diaphragm II (12), beam splitter
(9), window (8), diaphragm I (7), plano-convex lens (5) and fixing end (3-3) form illumination path, light emitting diode (14) transmitting
Illumination light can to pass sequentially through convex lens II (13), diaphragm II (12), beam splitter (9), window (8), diaphragm I (7), plano-convex saturating
After mirror (5) and fixing end (3-3), it is mapped on sample (4)；Fixing end (3-3), plano-convex lens (5), diaphragm I (7), window (8),
The imaging optical path of beam splitter (9), convex lens I (10) and video camera (11) composition sample (4), the light that sample (4) issues can be according to
It is secondary by fixing end (3-3), plano-convex lens (5), diaphragm I (7) and window (8), and by beam splitter (9) be biased to after, by convex
Lens I (10) enters video camera (11).
If Fig. 2 is the sectional view of high pressure chest, if Fig. 3 is the side view of Fig. 2, high pressure chest (3) include high-pressure chamber (3-1),
Pressure piston (3-2), fixing end (3-3), sapphire sheet I (3-4) and sapphire sheet II (3-5), high-pressure chamber (3-1) is by stainless
Steel is made, and pressure piston (3-2) is pierced by air chamber (1) through-hole above and can move up and down, and pressure piston (3-2) and gas
There is air-tightness between body cavity (1)；High-pressure chamber (3-1) is the hollow cube structure that side length is 12 millimeters, including through-hole
I, central channel and through-hole II three parts, through-hole I and through-hole II are truncated cone-shaped through-hole, through-hole I and through-hole II coaxial line, axis warp
It crosses the high-pressure chamber center (3-1) and is parallel to the direction z, length of the through-hole I in the direction z is 3 millimeters, top surface diameter is 5 millimeters, bottom
Face diameter is 8.4 millimeters, and length of the through-hole II in the direction z is 5 millimeters, top surface diameter is 5 millimeters, basal diameter is 10.8 millis
Rice, the small bore end of through-hole I and the small bore end of through-hole II are opposite, and central channel is located between two small bore ends, through-hole I and through-hole
The big nose end of II is located at two outsides of high-pressure chamber (3-1), and sapphire sheet I (3-4) and sapphire sheet II (3-5) are respectively positioned on
It in central channel and is parallel with x/y plane identical two pieces.
It is the section of high-pressure chamber, sapphire sheet I and sapphire sheet II xz plane if Fig. 4 is the A-A sectional view of Fig. 2
Figure, is by the sectional view of the xz plane at the center through-hole I, central channel connects with sapphire sheet I (3-4) and sapphire sheet II (3-5)
The part of touching all has corrugated notch, and the corrugated notch is sinusoidal waveform notch, sapphire sheet I (3-4) and sapphire
Length of the piece II (3-5) in x, y, z direction is respectively 6 millimeters, 9 millimeters and 1.5 millimeters, sapphire sheet I (3-4) and through-hole I
Small bore end be close to, the small bore end abutting of sapphire sheet II (3-5) and through-hole II, sapphire sheet I (3-4) and sapphire sheet II
Sky of the sapphire crystal axis c-axis each parallel to the direction z, between sapphire sheet I (3-4) and sapphire sheet II (3-5) in (3-5)
Between be sample room, the sample room bottom have fixing end (3-3), the fixing end (3-3) have elasticity and be fixed on high pressure
The bottom of cavity (3-1), fixing end (3-3) are connect with sapphire sheet I (3-4) and sapphire sheet II (3-5) respectively, fixing end
(3-3) can light transmission, the fixing end (3-3) the direction y length be 5 millimeters, pressure piston (3-2) can be through air chamber
(1) through-hole above is inserted into sample room, and sample (4) is located at the area between the lower end of pressure piston (3-2) and fixing end (3-3)
The upper end in domain, pressure piston (3-2) connects pressurized equipment (2), and when carrying out High-Voltage Experimentation, pressurized equipment (2) band dynamic pressure is living
Plug (3-2) moves down and can apply pressure to sample (4).
Principle using sapphire sheet I (3-4) and sapphire sheet II (3-5) as the side wall of sample room are as follows:
Since neutron beam must can just have enough number of neutronss incident by the higher material of transmissivity of certain area
To on sample (4), similarly, it is necessary to having enough number of neutronss scattered by sample (4) to leave sample room just can be detected, because
Use sapphire sheet I (3-4) arranged in parallel and sapphire sheet II (3-5) respectively as two sides of sample room in this present invention
Wall；Sapphire material has the advantage that intensity is higher and is able to bear biggish pressure；The texture on surface is less, to avoid
Interference signal is generated in small angle scattering experiment；Neutron absorption cross-section is smaller；Chemically it is inertia, chemistry will not occurs with sample
Reaction.
The principle of neutron scattering experiment is carried out while applying pressure to sample (4) in utility model device are as follows:
By sapphire sheet I (3-4), sapphire sheet II (3-5), the central channel of high-pressure chamber (3-1) and fixing end (3-3) group
At sample room dimensionally can be corresponding with the diameter of 5 to 8 millimeters of neutron streaming；Neutron beam from air chamber (1) outside according to
It is secondary to be mapped on sample (4) by the transmission window of air chamber (1) side, the through-hole I and sapphire sheet I (3-4) of high pressure chest (3),
Sapphire sheet II (3-5), the through-hole II of high pressure chest (3) and air chamber (1) side are passed sequentially through by the neutron that sample (4) scatter
Transmission window project air chamber (1) outside, to be detected by neutron detector；Pass through moving down for pressure piston (3-2)
Unilateral pressure is carried out to sample (4) due to the effect of pressure, to contact in sapphire sheet I (3-4) with through-hole I at the same time
The part partially and in sapphire sheet II (3-5) contacted with through-hole II can generate centainly curved to negative z direction and positive z direction respectively
Curved change, and the utility model uses the c-axis of sapphire crystal axis in sapphire sheet I (3-4) and sapphire sheet II (3-5)
It can judge each parallel to the design in the direction z, therefore from crystallography, such design can obtain highest mechanical resistance,
So that bigger pressure is born in sample room, sample (4) can obtain bigger pressure, Pressure maximum value 1000
Bar；During pressure piston (3-2) applies pressure to sample (4), in order to guarantee sapphire sheet I (3-4) and sapphire sheet
The deformation process of II (3-5) is more stable, and to helium, neon or argon gas is filled in air chamber (1), pressure range is 100 bars to 600
Bar；In addition, being accumulated in sapphire sheet I (3-4) during pressure piston (3-2) applies pressure to sample (4) in order to discharge
With the stress in sapphire sheet II (3-5), the part tool that central channel is contacted with sapphire sheet I (3-4) and sapphire sheet II (3-5)
There is corrugated notch, such design extends service life under the premise of ensure that device reliability.
Due to using pressure piston (3-2) that sample (4) are carried out with unilateral pressure in utility model device, carry out
Pressure controlled step in situ is simple, without cumbersome alignment procedure, in addition, sample (4) replacement process is simple, it is only necessary to will press
The lower end of power piston (3-2) is extracted out from sample room, can replace sample (4) from the through-hole of high pressure chest (3) upper surface, from
And solves the prior art defect one.
The principle that sample is imaged in utility model device are as follows:
Basic principle be using the plano-convex lens (5) apart from sample (4) closer short focus, air chamber (1) outside
Side forms the real image of the sample (4) of an amplification, the light for being 633 nanometers for wavelength, and the representative value of plano-convex lens (5) focal length is
13 millimeters, curvature and geometry difference are smaller, and the diameter of diaphragm I (7) is 3 millimeters, and the numerical aperture of plano-convex lens (5) is limited in
0.11, the resolution ratio for obtaining plano-convex lens (5) is 3.5 microns, and plano-convex lens (5) are located at immediately below fixing end (3-3) 8 millimeters
Place the air chamber (1) at 200 millimeters of places can form outside the reality of the sample (4) that one about 14 times are amplified below the plano-convex lens (5)
Picture；Light emitting diode (14) issue illumination light wavelength be 633 nanometers, the illumination light pass sequentially through convex lens II (13),
After diaphragm II (12), beam splitter (9), window (8), diaphragm I (7), plano-convex lens (5) and fixing end (3-3), it is mapped to sample (4)
On, the reflected light that the illumination light is formed after sample (4) are reflected passes sequentially through fixing end (3-3), plano-convex lens (5), light
Late I (7) and window (8), and go backward through convex lens I (10) partially by beam splitter (9) and enter video camera (11), it is convex by adjusting
The position of lens I (10) and video camera (11) can observe the sample (4) of the higher amplification of resolution ratio by video camera (11)
Real image；In addition, will appear as in due to sapphire sheet I (3-4) and sapphire sheet II (3-5) and sample in video camera (11)
(4) interference figure caused by the gap between can judge sapphire sheet I (3-4) and sapphire sheet II (3-5) and sample with this
Whether product (4) contact closely, in conclusion utility model device can overcome the volumetric constraint of air chamber, in optical element
Under conditions of biggish operating distance, light collection efficiency is improved, it is higher to the imaging resolution of sample, and real-time judge sample
State, to solve the prior art defect two.
A kind of device for neutron scattering experiment includes air chamber (1), pressurized equipment (2), high pressure chest (3), sample
Product (4), plano-convex lens (5), bracket (6), diaphragm I (7), window (8), beam splitter (9), convex lens I (10), video camera (11),
Diaphragm II (12), convex lens II (13), light emitting diode (14) and neutron detector, xyz are three-dimensional coordinate system, air chamber
(1) helium, neon or argon gas can be filled in, pressure range is 100 bars to 600 bars, and high pressure chest (3) is located in air chamber (1),
Plano-convex lens (5) and diaphragm I (7) are installed below the high pressure chest (3) in air chamber (1) by bracket (6), plano-convex lens (5)
Above diaphragm I (7), the position of plano-convex lens (5) and diaphragm I (7) can be adjusted by bracket (6), high pressure chest (3) is above
With piston hole, there is through-hole above with the air chamber (1) of piston hole corresponding position, air chamber (1) has window (8) below,
Window (8) can light transmission, the side of air chamber (1) has a transmission window, neutron beam can be entered by the transmission window or
Leave air chamber (1), beam splitter (9), convex lens I (10), video camera (11), diaphragm II (12), convex lens II (13) and shine
Diode (14) is respectively positioned on the lower section of air chamber (1) outside, light emitting diode (14), convex lens II (13), diaphragm II (12), beam splitting
Device (9), window (8), diaphragm I (7), plano-convex lens (5) and fixing end (3-3) form illumination path, light emitting diode (14) hair
The illumination light penetrated can pass sequentially through convex lens II (13), diaphragm II (12), beam splitter (9), window (8), diaphragm I (7), plano-convex
It after lens (5) and fixing end (3-3), is mapped on sample (4), fixing end (3-3), plano-convex lens (5), diaphragm I (7), window
(8), the imaging optical path of beam splitter (9), convex lens I (10) and video camera (11) composition sample (4), the luminous energy that sample (4) issues
Fixing end (3-3), plano-convex lens (5), diaphragm I (7) and window (8) are enough passed sequentially through, and after beam splitter (9) are biased to, is led to
Convex lens I (10) are crossed into video camera (11)；High pressure chest (3) includes high-pressure chamber (3-1), pressure piston (3-2), fixing end
(3-3), sapphire sheet I (3-4) and sapphire sheet II (3-5), pressure piston (3-2) are pierced by the through-hole of air chamber (1) above simultaneously
It can move up and down, and there is air-tightness between pressure piston (3-2) and air chamber (1)；High-pressure chamber (3-1) is that side length is ten
Two millimeters of hollow cube structure, including through-hole I, central channel and through-hole II three parts, through-hole I and through-hole II are truncated cone-shaped
Through-hole, through-hole I and through-hole II coaxial line, axis is by the high-pressure chamber center (3-1) and is parallel to the direction z, the small bore end of through-hole I
Opposite with the small bore end of through-hole II, central channel is located between two small bore ends, and the big nose end of through-hole I and through-hole II distinguish position
In two outsides of high-pressure chamber (3-1), sapphire sheet I (3-4) and sapphire sheet II (3-5) are respectively positioned in central channel and are
Identical two piece parallel with x/y plane；The part that central channel is contacted with sapphire sheet I (3-4) and sapphire sheet II (3-5) is equal
With corrugated notch, the small bore end of sapphire sheet I (3-4) and through-hole I is close to, and sapphire sheet II (3-5) and through-hole II's is small
Sapphire crystal axis c-axis is each parallel to the direction z, Lan Bao in nose end abutting, sapphire sheet I (3-4) and sapphire sheet II (3-5)
Space between flag I (3-4) and sapphire sheet II (3-5) is sample room, and the sample room bottom has fixing end (3-3),
The fixing end (3-3) has elasticity and is fixed on the bottom of high-pressure chamber (3-1), fixing end (3-3) respectively with sapphire sheet I
(3-4) and sapphire sheet II (3-5) connection, fixing end (3-3) can light transmission, pressure piston (3-2) can be through on air chamber (1)
The through-hole in face is inserted into sample room, and sample (4) is located at the region between the lower end of pressure piston (3-2) and fixing end (3-3), pressure
The upper end of piston (3-2) connects pressurized equipment (2), and when carrying out High-Voltage Experimentation, pressurized equipment (2) drives pressure piston (3-2)
It moves down and pressure can be applied to sample (4)；High-pressure chamber (3-1) is made of stainless steel；The through-hole of high-pressure chamber (3-1)
Length of the I in the direction z is 3 millimeters, top surface diameter is 5 millimeters, basal diameter is 8.4 millimeters, the through-hole II of high-pressure chamber (3-1)
Length in the direction z is 5 millimeters, top surface diameter is 5 millimeters, basal diameter is 10.8 millimeters；Central channel and sapphire sheet I (3-
4) and the corrugated notch of sapphire sheet II (3-5) contact portion is sinusoidal waveform notch；Sapphire sheet I (3-4) and sapphire
Length of the piece II (3-5) in x, y, z direction is respectively 6 millimeters, 9 millimeters and 1.5 millimeters；The fixing end (3-3) is in the direction y
Length be 5 millimeters.
High-pressure chamber (3-1) includes through-hole I, central channel and through-hole II three parts, and through-hole I and through-hole II are that truncated cone-shaped is logical
Hole, therefore, through-hole I and through-hole II all have small bore end and big nose end, and the small bore end of through-hole I and the small bore end of through-hole II are opposite,
Central channel is located between two small bore ends, and the big nose end of through-hole I and through-hole II is located at the two of high-pressure chamber (3-1)
Outside can adapt to the size of the transmission window of air chamber (1) side, so that neutron beam can smoothly be mapped to sample
(4) on, air chamber (1) can smoothly be projected outside by the neutron that sample (4) scatter, and detected by neutron detector.
The fixing end (3-3) is fixed on the bottom of high-pressure chamber (3-1), and precious with sapphire sheet I (3-4) and indigo plant respectively
Flag II (3-5) is close to, when pressure piston (3-2) moves down the pressure unilateral to sample (4) progress, due to the work of pressure
Bending Deformation can be generated to negative z direction with, the part being close in sapphire sheet I (3-4) with through-hole I, in sapphire sheet II (3-5)
The part being close to through-hole II can generate Bending Deformation to positive z direction, and fixing end (3-3) has elasticity, can guarantee fixing end
Between (3-3) and sapphire sheet I (3-4), between fixing end (3-3) and sapphire sheet II (3-5) be not in gap.
Utility model device applies pressure to sample using the high pressure chest being located in air chamber, has biggish neutron
Transmitance and optical transmittance can be suitable for neutron scattering experiment, and the process for replacing sample is simple, pressure controlled step in situ
It is rapid easy, the optical imaging method of special designing is in addition used, the higher light of resolution ratio can be carried out to sample outside air chamber
Picture is studied, to monitor the state of sample.
Claims (6)
1. a kind of device for neutron scattering experiment, including air chamber (1), pressurized equipment (2), high pressure chest (3), sample (4),
Plano-convex lens (5), bracket (6), diaphragm I (7), window (8), beam splitter (9), convex lens I (10), video camera (11), diaphragm II
(12), convex lens II (13), light emitting diode (14) and neutron detector, xyz are three-dimensional coordinate system, in air chamber (1)
It can be filled with helium, neon or argon gas, pressure range is 100 bars to 600 bars, and high pressure chest (3) is located in air chamber (1), plano-convex
Lens (5) and diaphragm I (7) are installed below the high pressure chest (3) in air chamber (1) by bracket (6), and plano-convex lens (5) are located at
Above diaphragm I (7), the position of plano-convex lens (5) and diaphragm I (7) can be adjusted by bracket (6), high pressure chest (3) has above
Piston hole has through-hole with the air chamber (1) of piston hole corresponding position above, and air chamber (1) has window (8) below, window
(8) can light transmission, the side of air chamber (1) has transmission window, and neutron beam can be entered or be left by the transmission window
Air chamber (1), beam splitter (9), convex lens I (10), video camera (11), diaphragm II (12), convex lens II (13) and light-emitting diodes
Pipe (14) is respectively positioned on the lower section of air chamber (1) outside, light emitting diode (14), convex lens II (13), diaphragm II (12), beam splitter
(9), window (8), diaphragm I (7), plano-convex lens (5) and fixing end (3-3) form illumination path, light emitting diode (14) transmitting
Illumination light can to pass sequentially through convex lens II (13), diaphragm II (12), beam splitter (9), window (8), diaphragm I (7), plano-convex saturating
After mirror (5) and fixing end (3-3), be mapped on sample (4), fixing end (3-3), plano-convex lens (5), diaphragm I (7), window (8),
The imaging optical path of beam splitter (9), convex lens I (10) and video camera (11) composition sample (4), the light that sample (4) issues can be according to
It is secondary by fixing end (3-3), plano-convex lens (5), diaphragm I (7) and window (8), and by beam splitter (9) be biased to after, by convex
Lens I (10) enters video camera (11),
It is characterized in that: high pressure chest (3) includes high-pressure chamber (3-1), pressure piston (3-2), fixing end (3-3), sapphire sheet I
(3-4) and sapphire sheet II (3-5), pressure piston (3-2) are pierced by air chamber (1) through-hole above and can move up and down, and
There is air-tightness between pressure piston (3-2) and air chamber (1)；High-pressure chamber (3-1) is that side length is 12 millimeters hollow vertical
Cube structure, including through-hole I, central channel and through-hole II three parts, through-hole I and through-hole II are truncated cone-shaped through-hole, through-hole I and logical
Hole II coaxial line, axis is by the high-pressure chamber center (3-1) and is parallel to the direction z, the small bore end of through-hole I and the aperture of through-hole II
End is opposite, and central channel is located between two small bore ends, and the big nose end of through-hole I and through-hole II are located at high-pressure chamber (3-
1) two outsides, sapphire sheet I (3-4) and sapphire sheet II (3-5) are respectively positioned in central channel and are parallel with x/y plane
Identical two pieces；Central channel all has corrugated notch with the part contacted sapphire sheet I (3-4) and sapphire sheet II (3-5),
The small bore end of sapphire sheet I (3-4) and through-hole I is close to, and the small bore end of sapphire sheet II (3-5) and through-hole II are close to, sapphire
Sapphire crystal axis c-axis is each parallel to the direction z, sapphire sheet I (3-4) and indigo plant in piece I (3-4) and sapphire sheet II (3-5)
Space between jewel piece II (3-5) is sample room, and the sample room bottom has fixing end (3-3), the fixing end (3-3)
With elasticity and be fixed on the bottom of high-pressure chamber (3-1), fixing end (3-3) respectively with sapphire sheet I (3-4) and sapphire sheet
II (3-5) connection, fixing end (3-3) can light transmission, pressure piston (3-2) can through the through-hole of air chamber (1) above be inserted into sample
Product room, sample (4) are located at the region between the lower end of pressure piston (3-2) and fixing end (3-3), pressure piston (3-2) it is upper
End connection pressurized equipment (2), when carrying out High-Voltage Experimentation, pressurized equipment (2) drive pressure piston (3-2) moves down and can
Pressure is applied to sample (4).
2. a kind of device for neutron scattering experiment according to claim 1, it is characterized in that: high-pressure chamber (3-1) by
Stainless steel is made.
3. a kind of device for neutron scattering experiment according to claim 1, it is characterized in that: high-pressure chamber (3-1)
Length of the through-hole I in the direction z is 3 millimeters, top surface diameter is 5 millimeters, basal diameter is 8.4 millimeters, and high-pressure chamber (3-1) leads to
Length of the hole II in the direction z is 5 millimeters, top surface diameter is 5 millimeters, basal diameter is 10.8 millimeters.
4. a kind of device for neutron scattering experiment according to claim 1, it is characterized in that: central channel and sapphire sheet
I (3-4) and the corrugated notch of sapphire sheet II (3-5) contact portion are sinusoidal waveform notch.
5. a kind of device for neutron scattering experiment according to claim 1, it is characterized in that: sapphire sheet I (3-4) and
Length of the sapphire sheet II (3-5) in x, y, z direction is respectively 6 millimeters, 9 millimeters and 1.5 millimeters.
6. a kind of device for neutron scattering experiment according to claim 1, it is characterized in that: the fixing end (3-3)
Length in the direction y is 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822061451.2U CN209387555U (en) | 2018-12-01 | 2018-12-01 | A kind of device for neutron scattering experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822061451.2U CN209387555U (en) | 2018-12-01 | 2018-12-01 | A kind of device for neutron scattering experiment |
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| Publication Number | Publication Date |
|---|---|
| CN209387555U true CN209387555U (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822061451.2U Withdrawn - After Issue CN209387555U (en) | 2018-12-01 | 2018-12-01 | A kind of device for neutron scattering experiment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444185A (en) * | 2018-12-01 | 2019-03-08 | 金华职业技术学院 | A kind of device for neutron scattering experiment |
| CN109444185B (en) * | 2018-12-01 | 2024-08-13 | 金华职业技术学院 | Device for neutron scattering experiment |
-
2018
- 2018-12-01 CN CN201822061451.2U patent/CN209387555U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444185A (en) * | 2018-12-01 | 2019-03-08 | 金华职业技术学院 | A kind of device for neutron scattering experiment |
| CN109444185B (en) * | 2018-12-01 | 2024-08-13 | 金华职业技术学院 | Device for neutron scattering experiment |
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