CN106093090A - The positioner of a kind of neutron Static pressure diffraction sample and localization method - Google Patents
The positioner of a kind of neutron Static pressure diffraction sample and localization method Download PDFInfo
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- CN106093090A CN106093090A CN201610385130.0A CN201610385130A CN106093090A CN 106093090 A CN106093090 A CN 106093090A CN 201610385130 A CN201610385130 A CN 201610385130A CN 106093090 A CN106093090 A CN 106093090A
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- high pressure
- screw rod
- neutron
- pressure chest
- press
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Classifications
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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
- G01N23/207—Diffractometry using detectors, e.g. using a probe in a central position and one or more displaceable detectors in circumferential positions
- G01N23/2073—Diffractometry using detectors, e.g. using a probe in a central position and one or more displaceable detectors in circumferential positions using neutron detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/05—Investigating materials by wave or particle radiation by diffraction, scatter or reflection
- G01N2223/056—Investigating materials by wave or particle radiation by diffraction, scatter or reflection diffraction
Abstract
The invention provides positioner and the localization method of a kind of neutron Static pressure diffraction sample, utilize the microstructure change of material under neutron Static pressure diffractive technology research high pressure loading environment.Described device includes laser module, high pressure chest, fixed mount, press, four-dimensional adjusting bracket, sample stage and computer, described method determines a plane and the principle of central point thereof based on 3, achieve the location of neutron Static pressure diffraction sample, there is simple to operate, quick, reproducible advantage.
Description
Technical field
The invention belongs to neutron Static pressure diffractive technology field, be specifically related to the location of a kind of neutron Static pressure diffraction sample
Device and localization method.
Background technology
Material its internal atomic distance and atomic shell state in a high voltage state can change, simultaneously between atom
Electric charge also can redistribute, final recurring structure phase transformation and physical property change, forms new material or new physical phenomenon occurs.Institute
It is considered most possibly to obtain the research field of great scientific breakthrough in future with high-pressure science.But, the development of high-pressure science
It is strongly depend on the development of in-situ characterization technology.At present the main research means of high-pressure science has and is combined with diamond anvil technology
Synchrotron radiation X-ray technology, can in-situ observation condensed state matter structure transitivity Behavioral change under the conditions of extremely high pressure.
But high voltage x-ray encounters difficulty at the detection aspect such as light atom, magnetic material.And neutron can accurately determine relatively light atom
The position of particularly H, it is possible to identify neighbour's atom and distinguish isotope, and there is magnetic moment, can directly measure material magnet structure.
Additionally neutron also has the strongest penetration power, can penetrate the various environmental chamber of sample, such as high/low temperature, high pressure, high-intensity magnetic field etc..
So neutron source complements one another with synchrotron radiation light source at present, have become as the primary hand of material microstructure research under high pressure
Section.
In high pressure neutron diffraction, it is desirable to obtain higher quasi-hydrostatic pressure, the diameter of sample must be the least, and thick
Degree is generally no greater than its diameter, in sample is installed in metal packing simultaneously.Sample stage is not possessed to positioning function and load-bearing relatively
Little neutron diffraction instrument apparatus, doing High-Voltage Experimentation when, whole press is suspended on bracing frame, and sample is the most accurately in
In the sample that diffractometer detector is determined in the heart, directly have decided on whether to obtain effective diffraction data and guarantee to be surveyed
The accuracy of result, owing to the strength ratio synchrotron radiation X-ray of neutron is weak, utilizes traditional synchrotron radiation transmission imaging method real
The location of existing neutron high pressure diffraction sample is the most time-consuming and difficult.
Summary of the invention
The technical problem that the invention solves the problems that be to provide a kind of neutron Static pressure diffraction sample positioner this
Bright another technical problem to be solved is to provide the localization method of a kind of neutron Static pressure diffraction sample.
The positioner of the neutron Static pressure diffraction sample of the present invention, is characterized in, including laser module, high pressure chest, solid
Determine frame, press, four-dimensional adjusting bracket, sample stage and computer；
Described laser module has 3 groups, respectively laser module I, laser module II, laser module III, often group laser module bag
Include laser instrument, detector module, angular encoder, motor and wheel, the signal of angular encoder, motor and wheel
It is transferred to computer；
Described laser instrument is positioned at detector module front end, and detector module is distributed on the circumference of motion platform, motor
Being positioned at detector module rear end with wheel, angular encoder is positioned at below sample stage, and is in the circle center of motion platform, angle
Degree encoder is connected with detector module by metal link rod, and high pressure chest is positioned at the circle center of motion platform, laser module
Launch light beam towards circle center；
Described press includes housing, supports platform, oil pump, and housing is rectangular box, supports platform and is fixed on the following table within housing
Face, oil pump is fixed on the upper surface within housing, and oil pump moves from top to bottom；Place between support platform and the oil pump of described press
High pressure chest, compresses and consolidates high pressure chest when oil pump moves downward, unclamp high pressure chest when oil pump moves upward；
X screw rod, Y screw rod, Z screw rod and rotary shaft are installed on described four-dimensional adjusting bracket；Described rotary sleeve is contained in Z spiral shell
Outside bar, and it is welded with rotating disk；X screw rod, Y screw rod, Z screw rod can realize the movement of X, Y, Z-direction respectively, and rotary shaft can realize
Rotation about the z axis；Z screw rod lower end is provided with grab and is connected with the suspension ring on press top；
There are a conical bore, conical bore center and motion platform center superposition in sample stage center, and fixed mount has altitude mixture control merit
Can, its lower end is circular cone post, can be directly inserted in the conical bore of sample stage fixing.
The localization method of the neutron Static pressure diffraction sample of the present invention, is characterized in, comprises the following steps:
A. being arranged in high pressure chest by Static pressure neutron diffraction sample, high pressure chest is placed on fixed mount, and fixed mount is arranged on sample
On platform；
B. first the laser beam of the transmitting of laser module II overlaps with the incident neutron Shu Fangxiang demarcated in advance, adjusts height afterwards
The position in pressure chamber so that laser beam irradiation is at the top edge of the neutron incidence window of the rectangle of high pressure chest or the center of lower limb
Point；The laser beam that the laser beam that laser module I and laser module III are launched and laser module II are launched all is radiated at high pressure chest
On diverse location, marking pen is utilized to record three laser beam irradiations facula position on high pressure chest on high pressure chest；
C. being taken out from fixed mount by the high pressure chest in step a, be placed on the support platform of press, oil pump moves downward compression height
Pressure chamber；
D. utilize crane to winch to directly over press by four-dimension adjusting bracket, the suspension ring on press top are hung over the Z spiral shell of four-dimensional adjusting bracket
On the grab of bar lower end, crane is utilized four-dimensional adjusting bracket and press to be placed on the bracing frame of instrument platform, now four-dimensional regulation
Frame and press are respectively positioned on above sample stage；
E. by X screw rod, Y screw rod, Z screw rod and the rotary shaft on the four-dimensional adjusting bracket of regulation so that three be radiated on high pressure chest
The facula position that the hot spot of bundle laser beam records with step b overlaps, and location completes.
The positioner of the neutron Static pressure diffraction sample of the present invention and localization method, based on four-dimensional adjusting bracket, laser dress
Put, Neutron diffractometer detector module, angular encoder and the positioner of sample stage and determine a plane based on 3
And the localization method of the principle of central point, it is achieved that the location of neutron Static pressure diffraction sample, have simple to operate, quick,
Reproducible advantage.To utilize the microstructure of material under neutron Static pressure diffractive technology research high pressure loading environment to become
Change.
Accompanying drawing explanation
Fig. 1 is the location schematic diagram of the positioner of the neutron Static pressure diffraction sample of the present invention；
Fig. 2 is the reset schematic diagram of the positioner of the neutron Static pressure diffraction sample of the present invention；
In figure, 1. laser instrument 2. detector module 3. angular encoder 4. motor and wheel 5. neutron entrance window
The four-dimensional adjusting bracket 11. X screw rod 12. Y screw rod 13. Z spiral shells of mouth 7. high pressure chest 8. fixed mount 9. press 10.
Bar 14. rotary shaft 15. metal link rod 16. motion platform 17. sample stage 901. housing 902. supports platform
903. oil pump.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings with embodiment.
Following example are merely to illustrate the present invention, and not limitation of the present invention.Relevant person skilled in the art exists
In the case of the spirit and scope of the present invention, it is also possible to make a variety of changes, replace and modification, the most equal technology
Scheme falls within scope of the invention.
As shown in Figure 1 and Figure 2, the positioner of the neutron Static pressure diffraction sample of the present invention, including laser module, high pressure
Chamber 7, fixed mount 8, press 9, four-dimensional adjusting bracket 10, computer；Laser module has 3 groups, respectively laser module I, laser module
II, laser module III, often group laser module includes laser instrument, detector module, angular encoder and motor.Laser instrument is sent out
The green laser that ejected wave length is identical, angular encoder is the encoder of 19, and motor is the motor of step angle 1.8 °.
Being provided with air cushion on detector module, air cushion is connected with air compressor, and the air pressure of compressed gas is about 3.5 atmospheric pressure；Angle
Encoder is positioned at below sample stage 17, and is in the circle center of motion platform 16, angular encoder by metal link rod 15 with
Detector module is connected, and the signal of angular encoder and motor is transferred to computer, and computer program can control stepping
The motion of motor, it is achieved the accurate control of detector module position；High pressure chest 7 is positioned at the circle center of motion platform 16, high pressure
The size in chamber 7 is that Φ 100mm × 100(is high), it is positioned at circle center, 3 groups of laser modules are positioned on the circumference of motion platform 16, swash
The transmitting light beam of optical module is towards circle center；The size of press 9 is 400mm(width) × 580mm(height) × 180mm(thickness), pressure
Machine 9 weight is about 120Kg, including housing 901, supports platform 902, oil pump 903, and housing 901 is rectangular box, supports platform 902
In the lower surface within housing 901, oil pump 903 is fixed on the upper surface within housing 901, and oil pump 903 moves from top to bottom；Pressure
Placing high pressure chest 7 between support platform 902 and the oil pump 903 of machine 9, oil pump 903 compresses and fixes high pressure chest 7 when moving downward, oil
Pump 903 unclamps high pressure chest 7 when moving upward；The size of four-dimensional adjusting bracket 10 is 600mm × 600mm, and four-dimensional adjusting bracket 10 is pacified
Equipped with X screw rod 11, Y screw rod 12, Z screw rod 13, the motion of X, Y, Z-direction can be realized by the rotating disk rotating its tail end；Rotate
Axle 14 is sleeved on outside Z screw rod 13, and is welded with rotating disk, and by rotating rotating disk, rotary shaft 14 can rotate about the z axis, to realize
Press 9 rotation about the z axis；Z screw rod 13 lower end is provided with suspension hook and is connected with the suspension ring on press 9 top.
The localization method of the neutron Static pressure diffraction sample of the present invention, comprises the following steps:
(1) it is (the poorest according to different pressure demand sample sizes to be installed in high pressure chest 7 by neutron Static pressure diffraction sample
Not), outer layer wraps cadmium sheet thick for 1mm for absorbing unnecessary neutron, and reserved about 1cm(length in incident direction) ×
0.5cm(is high) incidence window, at the reserved diffraction window mated with high pressure chest 7 of diffraction direction, be installed to fix by high pressure chest 7
On frame 8, and it is fixedly installed on instrument sample axle, sample center, the central shaft of fixed mount 8 and the instrument sample in high pressure chest 7
Central shaft overlaps.
(2) laser module II forwards to 159.64 ° (these are neutron beam direction, the most demarcate), and laser module III is with sharp
Optical module I goes to 50 ° respectively, and (laser that the two position is launched will not be stopped by press 9 housing 901, can be more with-100 ° of positions
Change to other not by press 9 blocking position), plug laser module I, laser module II, laser module III laser power supply also
Open its switch, adjust the height of fixed mount 8 so that height of specimen and basically identical (the neutron beam center of neutron beam centre-height
It is highly liftoff 1.49 meters), and the green laser beam that sends of laser module II can be irradiated to the neutron beam entrance window of high pressure chest 7
Mouth top edge, records the facula position on high pressure chest 7 of three beams of laser on high pressure chest 7, takes off height with red symbol pen
Pressure chamber 7；
(3) high pressure chest 7 is installed in press 9, rotary high pressure chamber 7, adjusts neutron incidence and shooting angle so that it is do not pressed
The framework of machine 9 blocks, and keeps the maximum angle of diffraction as far as possible, is moved downward by the oil pump 903 of press 9, compressed by high pressure chest 7；
(4) utilize crane that four-dimensional adjusting bracket 10 is adjusted to the surface of press 9, and by the suspension ring of press 9 and four-dimensional adjusting bracket 10
Grab link together, four-dimensional adjusting bracket 10 and press 9 are hung on the bracing frame of neutron diffractometer platform by recycling crane；
(5) the relative position of the hot spot that is irradiated on high pressure chest 7 of three beams green laser and red symbol is observed, if both positions
Misaligned, utilize X, Y, Z screw rod and XY spinfunction regulation press 9 position of four-dimensional adjusting bracket 10, until three beams of laser
Hot spot is with till red symbol is completely superposed, and the reflection light now seen is redness, and Sample location completes, and closes three laser
Device power supply.
Claims (2)
1. the positioner of a neutron Static pressure diffraction sample, it is characterised in that described device includes laser module, high pressure chest
(7), fixed mount (8), press (9), four-dimensional adjusting bracket (10), sample stage (17) and computer；
Described laser module has 3 groups, respectively laser module I, laser module II, laser module III, often group laser module bag
Include laser instrument, detector module, angular encoder, motor and wheel, the signal of angular encoder, motor and wheel
It is transferred to computer；
Described laser instrument is positioned at the front end of detector module, and detector module is distributed on the circumference of motion platform (16), step
Entering motor and wheel is positioned at detector module rear end, angular encoder is positioned at sample stage (17) lower section, and is in motion platform
(16) circle center, angular encoder is connected with detector module by metal link rod (15), and it is flat that high pressure chest (7) is positioned at motion
The circle center of platform (16), the transmitting light beam of laser module is towards circle center；
Described press (9) includes housing (901), supports platform (902), oil pump (903), and housing (901) is rectangular box, supports
Platform (902) is fixed on the lower surface that housing (901) is internal, and oil pump (903) is fixed on the upper surface that housing (901) is internal, oil pump
(903) move from top to bottom；High pressure chest (7), oil pump is placed between support platform (902) and the oil pump (903) of described press (9)
(903) compressing and fix high pressure chest (7) when moving downward, oil pump (903) unclamps high pressure chest (7) when moving upward；
X screw rod (11), Y screw rod (12), Z screw rod (13) and rotary shaft (14) are installed on described four-dimensional adjusting bracket (10)；
Described rotary shaft (14) is sleeved on Z screw rod (13) outward, and is welded with rotating disk；X screw rod (11), Y screw rod (12), Z screw rod
(13) can realize the movement of X, Y, Z-direction respectively, rotary shaft (14) can realize rotation about the z axis；Z screw rod (13) lower end is provided with
Grab, grab is connected with the suspension ring on press (9) top；
There are a conical bore, conical bore center and motion platform center superposition in sample stage (17) center, and fixed mount (8) has height
Regulatory function, its lower end is circular cone post, can be directly inserted in the conical bore of sample stage (17) fixing.
2. the localization method of a neutron Static pressure diffraction sample, it is characterised in that said method comprising the steps of:
A. being arranged on by Static pressure neutron diffraction sample in high pressure chest (7), high pressure chest (7) is placed on fixed mount (8), fixed mount
(8) it is arranged on sample stage (17)；
B. first the laser beam of the transmitting of laser module II overlaps with the incident neutron Shu Fangxiang demarcated in advance, adjusts height afterwards
The position of pressure chamber (7) so that laser beam irradiation is at the top edge or following of the neutron incidence window (5) of the rectangle of high pressure chest (7)
The central point of edge；The laser beam that the laser beam that laser module I and laser module III are launched and laser module II are launched all is radiated at
On the diverse location of high pressure chest (7), utilize marking pen at high pressure chest (7) three laser beam irradiations of upper record on high pressure chest (7)
Facula position；
C. the high pressure chest (7) in step a is taken out from fixed mount (8), be placed on the support platform (902) of press (9), oil pump
(903) compression high pressure chest (7) is moved downward；
D. utilize crane to be winched to by four-dimension adjusting bracket (10) directly over press (9), the suspension ring on press (9) top are hung over four-dimensional tune
On the grab of joint frame (10) Z screw rod (13) lower end, utilize crane that four-dimensional adjusting bracket (10) and press (9) are placed in instrument platform
On bracing frame, now four-dimensional adjusting bracket (10) and press (9) are respectively positioned on sample stage (17) top；
E. by X screw rod (11), Y screw rod (12), Z screw rod (13) and the rotary shaft (14) on the four-dimensional adjusting bracket (10) of regulation, make
Must be radiated at the facula position that the hot spot of the three beams of laser bundle on high pressure chest (7) records with step b to overlap, location completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385130.0A CN106093090B (en) | 2016-06-03 | 2016-06-03 | A kind of positioning device and localization method of neutron Static pressure diffraction sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385130.0A CN106093090B (en) | 2016-06-03 | 2016-06-03 | A kind of positioning device and localization method of neutron Static pressure diffraction sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106093090A true CN106093090A (en) | 2016-11-09 |
| CN106093090B CN106093090B (en) | 2018-07-06 |
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| CN201610385130.0A Expired - Fee Related CN106093090B (en) | 2016-06-03 | 2016-06-03 | A kind of positioning device and localization method of neutron Static pressure diffraction sample |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1647840A2 (en) * | 2004-10-16 | 2006-04-19 | Bruker AXS GmbH | X-ray-optical or neutron-optical analyser comprising a stripdetector having variable light-transmission |
| US20110079725A1 (en) * | 2009-10-02 | 2011-04-07 | Ut-Battelle, Llc | Apparatus and method to achieve high-resolution microscopy with non-diffracting or refracting radiation |
| CN102507618A (en) * | 2011-11-24 | 2012-06-20 | 四川大学 | Anvil cell high pressure device for in situ neutron diffraction |
| CN103946694A (en) * | 2011-07-05 | 2014-07-23 | 开普敦大学 | Sample presentation device for radiation-based analytical equipment |
| CN105548226A (en) * | 2015-12-08 | 2016-05-04 | 东莞中子科学中心 | Sample replacing device for neutron scattering experiment |
-
2016
- 2016-06-03 CN CN201610385130.0A patent/CN106093090B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1647840A2 (en) * | 2004-10-16 | 2006-04-19 | Bruker AXS GmbH | X-ray-optical or neutron-optical analyser comprising a stripdetector having variable light-transmission |
| US20110079725A1 (en) * | 2009-10-02 | 2011-04-07 | Ut-Battelle, Llc | Apparatus and method to achieve high-resolution microscopy with non-diffracting or refracting radiation |
| CN103946694A (en) * | 2011-07-05 | 2014-07-23 | 开普敦大学 | Sample presentation device for radiation-based analytical equipment |
| CN102507618A (en) * | 2011-11-24 | 2012-06-20 | 四川大学 | Anvil cell high pressure device for in situ neutron diffraction |
| CN105548226A (en) * | 2015-12-08 | 2016-05-04 | 东莞中子科学中心 | Sample replacing device for neutron scattering experiment |
Non-Patent Citations (1)
| Title |
|---|
| 陈炜等: "裂变同位素靶管在300~#反应堆的辐照实验", 《核技术》 * |
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