CN105987923A - Low-temperature sample operation bench used for soft X-ray magnetic circular dichroism (MCD) - Google Patents
Low-temperature sample operation bench used for soft X-ray magnetic circular dichroism (MCD) Download PDFInfo
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- CN105987923A CN105987923A CN201510042519.0A CN201510042519A CN105987923A CN 105987923 A CN105987923 A CN 105987923A CN 201510042519 A CN201510042519 A CN 201510042519A CN 105987923 A CN105987923 A CN 105987923A
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Abstract
The invention provides a low-temperature sample operation bench used for soft X-ray magnetic circular dichroism (MCD). The operation bench includes: a wiring chamber having an upper end and a lower end; an X-Y-Z three-dimension moving bench mounted on a XMCD ultrahigh-vacuum chamber, the lower end of the wiring chamber mounted on the X-Y-Z three-dimension moving bench; a liquid nitrogen cooling apparatus connected to the upper end of the wiring chamber and passing through the X-Y-Z three-dimension moving bench; a copper cold head fixed on the lower end of the liquid nitrogen cooling apparatus; and a sample bracket being installed on the lower end of the copper cold head and being insulated from the copper cold head. The liquid nitrogen cooling apparatus is filled with liquid nitrogen so as to cool the sample on the sample bench. The low-temperature sample operation bench used for soft X-ray MCD achieves liquid nitrogen low temperature refrigeration as most as possible on the basis of consideration of insulation, magnet-free and high vacuum degree.
Description
Technical field
The present invention relates to a kind of cryogenic sample operating board, particularly relate to grenz ray magnetic circular dichroism (mcd) absorption spectra measurement sample operating bench tray under ultrahigh vacuum, high-intensity magnetic field, cryogenic conditions.
Background technology
Grenz ray magnetic circular dichroism (mcd) (XMCD) experimental technique is a kind of strong magnetic material characterization tool, has extensive and important application in the subjects such as Condensed Matter Physics, magnetics and material science.This experimental technique is harsh to sample environmental requirement, needs to take into account the experiment conditions such as ultrahigh vacuum, high-intensity magnetic field and low temperature, the most domestic lacks perfect XMCD experimental provision, more lacks the low-temperature sample operating bench tray being applicable to this kind of experiment condition.
Owing to sample operating bench tray plays a part sample installation, temperature adjusting and signal measurement, it it is the key component of XMCD experimental provision.XMCD signal measurement generally uses total electron yield (TEY) method, owing to the method is the photoelectron change with incident X-ray energy of measuring samples surface excitation, thus requires the insulation against ground of sample bearing part technically.Measure simultaneously and generally carry out at low temperatures, it is necessary to sample operating bench tray to sample liquid nitrogen refrigerating, and can have sample heating and thermometric function.In addition the specimen holder of bench board need to have relatively low remnant field, to avoid the interference to sample signal.
In a word, this kind of sample operating bench tray requires that function is many, and has insulation, heat conduction, feature without magnetic concurrently, adds the ultrahigh vacuum restriction to materials'use so that it designs tool and acquires a certain degree of difficulty.Equipment price commercial in the market is high, and does not do specially without magnetic design, and function is not mated, so that individually designed to meet the demand of XMCD experiment.
Summary of the invention
It is an object of the invention on the basis of prior art, it is provided that a kind of low-temperature sample operating bench tray being applicable to grenz ray magnetic circular dichroism (mcd) absorption spectra, taking into account insulation, without magnetic, fine vacuum on the premise of farthest realize liquid nitrogen cryogenics refrigeration.The design is simply efficient simultaneously, greatly reduces manufacturing cost.
For achieving the above object, the present invention proposes a kind of for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, is arranged on above grenz ray magnetic circular dichroism (mcd) vacuum cavity, and described low-temperature sample operating bench tray includes:
XYZ three-dimensional mobile station, is arranged on the top of described vacuum cavity, and described XYZ three-dimensional mobile station is internal to be connected with described vacuum cavity, to form inner vacuum environment；
Liquid nitrogen chiller, through the inner vacuum environment of described XYZ three-dimensional mobile station so that the described liquid nitrogen chiller of part is positioned in the inner vacuum environment of described XYZ three-dimensional mobile station；
Cold head, is fixed on the lower end of described liquid nitrogen chiller；
Specimen holder, is arranged on the lower end of described cold head, and insulate with described cold head；
Wherein, described liquid nitrogen chiller is injected with liquid nitrogen, to cool down the sample on described specimen holder.
The low-temperature sample operating bench tray being applicable to grenz ray magnetic circular dichroism (mcd) absorption spectra that the embodiment of the present invention proposes, taking into account insulation, without magnetic, fine vacuum on the premise of farthest realize liquid nitrogen cryogenics and freeze.The design is simply efficient simultaneously, greatly reduces manufacturing cost, overcomes technical difficulty, meets the ultrahigh vacuum requirement to materials'use.
It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe, the present invention can not be limited.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet embodiments of the invention, and for explaining the principle of the present invention together with description.
Fig. 1 is the 3 D stereo schematic diagram of the grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray of one embodiment of the invention；
Fig. 2 is the liquid nitrogen chiller schematic diagram of one embodiment of the invention；
Fig. 3 is cold head and the liquid nitrogen cooling tube connection diagram of one embodiment of the invention；
Fig. 4 A is the specimen holder of one embodiment of the invention, sapphire sheet, cold head connection diagram；
Fig. 4 B is the specimen holder top view of one embodiment of the invention；
Fig. 4 C is the teflon gasket schematic diagram of one embodiment of the invention；
Fig. 5 A is the specimen holder schematic three dimensional views of one embodiment of the invention；
Fig. 5 B is the oxygen-free copper specimen holder schematic diagram of one embodiment of the invention；
Fig. 5 C is the ceramic heating flake schematic diagram of one embodiment of the invention；
Fig. 5 D is the sample carrier schematic diagram of one embodiment of the invention.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.When explained below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the present invention.On the contrary, they only with describe in detail in appended claims, the present invention some in terms of consistent equipment and the example of method.
Explain a kind of low-temperature sample operating bench tray for grenz ray magnetic circular dichroism (mcd) of the present invention below with reference to accompanying drawing, this operating board has insulation, heat conduction, feature without magnetic, and meets the ultrahigh vacuum use requirement to material.
Fig. 1 show the 3 D stereo schematic diagram of the grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray of one embodiment of the invention.As it is shown in figure 1, this grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray includes liquid nitrogen chiller 100, connects cavity 200, XYZ three-dimensional mobile station 300, cold head 400 and oxygen-free copper specimen holder 500.Sample (not shown) is arranged on oxygen-free copper specimen holder 500.
Fig. 2 show liquid nitrogen chiller schematic diagram in Fig. 1.As in figure 2 it is shown, liquid nitrogen chiller 100 includes bump joint 101, liquid nitrogen cooling tube 102, flange 103 and guide pipe 104.Bump joint 101 can be the KF40 bump joint in vacuum flange standard, and flange 103 can be the CF63 flange in vacuum flange standard.Liquid nitrogen cooling tube 102 is cylindrical long tube, and bump joint 101 is arranged on the top of liquid nitrogen cooling tube 102, and guide cylinder 104 is set on liquid nitrogen cooling tube 102 and is positioned at the lower section of bump joint 101, and the lower section of guide pipe 104 connects flange 103.Liquid nitrogen cooling tube 102 lower end is connected by fixing connected modes such as welding rustless steel chassis 105, forms liquid nitrogen memorizer.Liquid nitrogen cooling tube 102 can be stainless steel, and its upper end can connect by the way of welding described bump joint 101, and as liquid nitrogen inlet and air vent, lower end can be with soldering stainless steel chassis to store liquid nitrogen.
What deserves to be explained is, guide pipe 104 is welded on the center of flange 103, liquid nitrogen cooling tube 102 is welded on the center of guide pipe 104, liquid nitrogen cooling tube 102 can be stainless steel, bump joint 101 can be connected to liquid nitrogen cooling tube 102 top by the way of welding, is used as liquid nitrogen inlet and air vent.
Connecting cavity 200, to be three one end in the present embodiment be vertically connected to, with the cylindrical work of flange, the structure that formed together, can be used for drawing holding wire, platinum resistor temperature measuring line and ceramic heat line as lead-in wire cavity.Connect cavity 200 and include upper flanges 200a, lower end flanges 200b and and left and right sides flange.The flange 103 of liquid nitrogen chiller 100 links together with upper flanges 200a being connected cavity 200.
XYZ three-dimensional mobile station 300 can be the MB2000-Series XYZ three-dimensional mobile station that Mcallister company produces.It includes X-direction manual translation platform 301, Y-direction manual translation platform 302 and vertical direction motorized stage 303.Realize horizontal linear displacement by X-direction manual translation platform 301 and Y-direction manual translation platform 302, realize Z-direction by vertical direction motorized stage 303 and move vertically.Lower end flanges 200b connecting cavity 200 is connected with X-direction manual translation platform 301, i.e. connects cavity 200 and is arranged on the edge of a knife flange of mobile station 300 upper end.
Cold head 400 and oxygen-free copper specimen holder 600 are arranged on liquid nitrogen chiller 100 lower end, and wherein, cold head 400 is connected to the lower end of liquid nitrogen cooling tube 102, and oxygen-free copper specimen holder 600 is arranged on the lower end of cold head 400.XYZ three-dimensional mobile station 300 also includes vacuum corrugated pipe 304 and bottom edge of a knife flange 305.XYZ three-dimensional mobile station 300 is to be arranged on required XMCD ultrahigh vacuum cavity by bottom edge of a knife flange 305, and liquid nitrogen cooling tube 102 is connected through the vacuum corrugated pipe 304 of XYZ three-dimensional mobile station 300 with cold head 400.Cold head 400 is preferably copper cold head, and using copper is due to its good heat-transfer, and exhausted magnetic is good, can be used in vacuum environment.It may occur to persons skilled in the art that employing other materials substitutes.
XYZ three-dimensional mobile station 300 utilizes the pliability of vacuum corrugated pipe 304, realizes horizontal linear displacement by X-direction manual translation platform 301 and Y-direction manual translation platform 302, realizes Z-direction by vertical direction motorized stage 303 and moves vertically.
Fig. 3 is cold head and the liquid nitrogen cooling tube connection diagram of one embodiment of the invention.As it is shown on figure 3, cold head 400 include hollow cylindrical body 401, be opened in the screwed hole 402 of hollow circuit cylinder body 401, the pyrite screw (not shown) inserted in screwed hole 402, be opened in bottom the cylindrical body 401 but bottom thread hole 404 of non-through cylindrical body 401 diapire and install after fill area 405 between liquid nitrogen cooling tube 102 and cylindrical body 401.
The spatial interpolation of hollow circuit cylinder body 401 enters liquid nitrogen cooling tube 102.Hollow circuit cylinder body 401 selects oxygenless copper material to process, and is because high-purity oxygen-free copper material and has the characteristic that heat conductivity is good, nonmagnetic and venting rate is low, can use in fine vacuum.Cylindrical body 401 has screwed hole 402 and coordinates pyrite screw to be fixed by liquid nitrogen cooling tube 102.Cylindrical body 401 bottom has bottom thread hole 404.In order to increase heat transfer efficiency, the fill area 405 of liquid nitrogen cooling tube 102 and hollow circuit cylinder body 401 composition is filled with liquid alloy.The indium gallium alloy that fusing point can be selected to be 40 degree, as implant, is owing to it has the advantages that fusing point is low, good heat conductivity, mobility are high.
Its installation procedure it is described in further detail as follows at this:
First pyrite screw is contained on screwed hole 402 in advance；Next takes appropriate solid indium gallium alloy and is filled into hollow circuit cylinder body 401 bottom, is placed on warm table by cold head 400 and is heated to about 80 degree；After indium gallium alloy fully melts, liquid nitrogen cooling tube 102 inserting cylindrical body 401 bottom, rotating cylindrical body 401 fastens screw after liquid alloy is sufficient filling with；Finally close heating power supply, stand to room temperature.Method installed above makes indium gallium alloy be sufficient filling with in gap, improves heat transfer efficiency.
Fig. 4 A is the specimen holder of one embodiment of the invention, sapphire sheet, cold head connection diagram；Fig. 4 B is the specimen holder top view of one embodiment of the invention；Fig. 4 C is the teflon gasket schematic diagram of one embodiment of the invention；As shown in Figure 4 A, specimen holder 600 is connected to described cold head 400 bottom.In the middle of cold head 400 and specimen holder 600, insulating trip is installed.Sapphire material 500 can be selected to make specimen holder insulation against ground as insulating trip, be because sapphire (Al2O3) it is the insulant that heat conductivity is the highest so far, it is contemplated that manufacturing cost also takes into account heat transfer efficiency and the sapphire sheet of resistivity preferred 3mm thickness.For improving heat transfer efficiency, polishing is done in the upper surface of the bottom face 406 of cold head 400, the upper surface 501 of sapphire sheet 500, the lower surface 502 of sapphire sheet 500 and specimen holder 600.For improving heat transfer efficiency further, smearing indium gallium liquid alloy on the upper surface 501 and lower surface 502 of sapphire sheet 500, operating process is as described in the preceding paragraph, and here is omitted.There is in sapphire sheet 500 through hole 503 running through upper and lower surface, wear for screw 601 and cold head 400 and specimen holder 600 are locked.
Fig. 5 A is the specimen holder schematic three dimensional views of one embodiment of the invention；Shown in Fig. 4 A to Fig. 4 C and figure Fig. 5 A, described specimen holder 600 is processed by oxygen-free copper material, and including specimen holder body 600a, the upper end of specimen holder body 600a is disc-shaped structure, and disc-shaped structure lower end connects rectangular structure.Semi-circular recesses 603 is offered, for being fixed together with sapphire sheet 500 and cold head 400 by specimen holder body 600a by titanium screw 601 in disc-shaped structure.Teflon insulation pad 602 can be provided with in semi-circular recesses 603.
As shown in figs. 4 b and 4 c, semi-circular recesses 603 center has preferablyThrough hole, teflon insulation pad 602 is arranged in described semi-circular recesses 603 and through hole thereof, is insulated with specimen holder 600 by screw 601.Insulation spacer 602 selects politef to be that venting rate is low owing to this material insulation property is good.It is nonmagnetic metal that the preferred titanium screw of screw 601 is because titanium, also will not be magnetized in the biggest magnetic field.The most also can be selected for ceramic screw and replace titanium screw 601 and teflon insulation pad 602, but ceramic machinery intensity is not as titanium screw.Titanium screw 601 sequentially passes through teflon gasket 602, semi-circular recesses 603 and sapphire through hole 503 installation and is fastened on bottom thread hole 404, makes cold head 400, sapphire sheet 500 and specimen holder 600 be fully contacted and be fixed together.
Fig. 5 B is the oxygen-free copper specimen holder schematic diagram of one embodiment of the invention；Fig. 5 C is the ceramic heating flake schematic diagram of one embodiment of the invention；Fig. 5 D is the sample carrier schematic diagram of one embodiment of the invention.As shown in Fig. 5 B to Fig. 5 D, the rectangular structure of specimen holder 600 has relative front and back, and specimen holder 600 also includes being positioned at the PT100 platinum resistance 605 in front, for compressing PT100 platinum resistance 605 fixing beryllium copper tabletting 604, being arranged in beryllium copper tabletting 604 with the M3 titanium screw 606 being fixed on by beryllium copper tabletting 604 on specimen holder body 600a.PT100 platinum resistance 605 is for temperature survey.
The front of specimen holder 600 also includes sample carrier 614, upper end beryllium copper shell fragment 610, lower end beryllium copper shell fragment 611.Specimen holder body 600a has M3 screwed hole 613, upper end beryllium copper shell fragment 610 and lower end beryllium copper shell fragment 611 are fixed on specimen holder body 600a through M3 screwed hole 613 by M3 titanium screw 612, and upper end beryllium copper shell fragment 610 and lower end beryllium copper shell fragment 611 are used for compressing and fix sample carrier 614 in specimen holder body 600a.Sample carrier 614 can in vacuo transmit sample by sample transmission rod.
In addition, specimen holder 600 also includes the ceramic heating flake 607 being positioned at the back side, having ceramic heating flake circular hole 608 on ceramic heating flake 607, specimen holder body 600a has M4 screwed hole 609, screw is fixed on specimen holder M4 screwed hole 609 through ceramic heating flake circular hole 608.Ceramic heating flake 607 is for sample heating and alternating temperature.
Also having sample carrier draw-in groove 618 on specimen holder body 600a, be used for housing sample carrier 614, sample drags 614 to have sample carrier handle 615.Sample can be fixedly installed on sample carrier 614, and sample carrier 614 offers M1.6 screwed hole 616, and sample is fixed on sample carrier 614 by screw and M1.6 screwed hole 616.Also having M2 screwed hole 617 on specimen holder body 600a, sample carrier 614 is arranged in M2 screwed hole 617 by screw and is fixed on specimen holder body 600a.
As shown in Figure 5A, sample carrier 614 is arranged in the sample carrier draw-in groove 618 of specimen holder body 600a lower end, front is compressed by upper beryllium copper shell fragment 610 and lower beryllium copper shell fragment 611, the back side by the screw adjusting elasticity degree in screwed hole 617 so that sample carrier 614 into and out.The preferred molybdenum of sample carrier 614 material, is because molybdenum electric conductivity and is well conducive to the extraction of sample Electron signal, have high-temperature oxidation resistant characteristic when sample heats simultaneously, and non-magnetic feature is also applied for XMCD and measures.Sample carrier handle 615 is suitable for for transmission lever transmission sample.Screwed hole 616 is had for press-fiting sample on sample carrier 614.
The low-temperature sample operating bench tray of this grenz ray magnetic circular dichroism (mcd) farther includes outside PID temperature controller (not shown).In temperature-fall period, temperature monitoring signal is passed to PID temperature controller displays temperature by PT100 platinum resistance 605.In heating process, after design temperature, PID temperature controller heats sample by controlling ceramic heating flake 607 both end voltage, and temperature signal is fed back to PID temperature controller by PT100 platinum resistance 605, to realize the accurate control to sample temperature.
Using the low-temperature sample operating bench tray of the grenz ray magnetic circular dichroism (mcd) of present invention offer, sample can reach subzero 196 degrees Celsius.In temperature-fall period, sample can be reduced to liquid nitrogen temperature from room temperature in 20 minutes in vacuum environment.Irrigating a liquid nitrogen can make sample keep about 2 hours in liquid nitrogen temperature.For grenz ray XMCD experiment be smoothed out provide grace time.
The low-temperature sample operating bench tray being applicable to grenz ray magnetic circular dichroism (mcd) absorption spectra that the embodiment of the present invention proposes, taking into account insulation, without magnetic, fine vacuum on the premise of farthest realize liquid nitrogen cryogenics and freeze.The design is simply efficient simultaneously, greatly reduces manufacturing cost, overcomes technical difficulty, meets the ultrahigh vacuum requirement to materials'use.
Those skilled in the art, after considering description and putting into practice disclosure herein, will readily occur to other embodiment of the application.The application is intended to any modification, purposes or the adaptations of the disclosure, and these modification, purposes or adaptations are followed the general principle of the application and include the undocumented common knowledge in the art of the application or conventional techniques means.Description and embodiments is considered only as exemplary, and the true scope of the application and spirit are pointed out by claim.
It should be appreciated that the application is not limited to precision architecture described above and illustrated in the accompanying drawings, and various modifications and changes can carried out without departing from the scope.Scope of the present application is only limited by appended claim.
Claims (10)
1., for a grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, it is arranged on grenz ray magnetic circle two
On color vacuum cavity, it is characterised in that described low-temperature sample operating bench tray includes:
XYZ three-dimensional mobile station (300), is arranged on the top of described vacuum cavity, and described XYZ is three-dimensional
Mobile station (300) is internal to be connected with described vacuum cavity, to form inner vacuum environment；
Liquid nitrogen chiller (100), through the inner vacuum of described XYZ three-dimensional mobile station (300)
Environment so that the described liquid nitrogen chiller (100) of part is positioned at described XYZ three-dimensional mobile station (300)
Inner vacuum environment in；
Cold head (400), is fixed on the lower end of described liquid nitrogen chiller (100)；
Specimen holder (600), is arranged on the lower end of described cold head (400), and with described cold head (400)
Insulation；
Wherein, described liquid nitrogen chiller (100) is injected with liquid nitrogen, to cool down described specimen holder (600)
On sample.
2. as claimed in claim 1 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described also including for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray connects cavity (200),
Described connection cavity (200) has top and bottom, and the lower end of described connection cavity (200) is arranged on
On described XYZ three-dimensional mobile station (300), described connection cavity (200) is internal by described XYZ
Three-dimensional mobile station (300) connects with described vacuum cavity；Described liquid nitrogen chiller (100) is connected to
The upper end of described connection cavity (200), and through described connection cavity (200),
Described connection cavity (200) includes upper flanges (200a) and lower end flanges (200b)；Described
Connect cavity (200) and be arranged on described XYZ three-dimensional mobile station (300) by described lower end flanges (200b)
On；Described liquid nitrogen chiller (100) includes that flange (103), described flange (103) are connected to institute
State the described upper flanges (200a) connecting cavity (200).
3. as claimed in claim 2 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described liquid nitrogen chiller (100) also includes bump joint (101), liquid nitrogen cooling tube (102)
With guide pipe (104), described bump joint (101) is positioned at the top of described liquid nitrogen chiller (100)
Portion, described liquid nitrogen cooling tube (102) is connected to the lower section of described bump joint (101), described guiding
Pipe (104) is set in the outside of described liquid nitrogen cooling tube (102), and described guide pipe (104)
Lower section connects described flange (103), and the lower end of described liquid nitrogen cooling tube (102) is from described flange (103)
Lower section is stretched out, and described bump joint (101) is as liquid nitrogen inlet and air vent, described liquid nitrogen cooling tube
(102) bottom lock.
4. as claimed in claim 3 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described cold head (400) is hollow circular cylinder, and is set in described liquid nitrogen cooling tube (102)
Bottom, is filled with heat-transfer matcrial between described cold head (400) and described liquid nitrogen cooling tube (102).
5. as claimed in claim 4 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described specimen holder (600) includes specimen holder body (600a), is fixed on described specimen holder body
(600a) above for measuring the resistance (605) of temperature and for carrying the sample carrier (614) of sample,
Described specimen holder body (600a) is connected to described cold head (400).
6. as claimed in claim 5 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described resistance (605) is pressed abd fixed on described specimen holder body (600) by tabletting (604)
On, described specimen holder body (600a) has sample carrier draw-in groove (618), described sample carrier (614)
It is fixed on described specimen holder body (600a) by upper end shell fragment (610) and lower end shell fragment (611)
In described sample carrier draw-in groove (618).
7. as claimed in claim 6 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described specimen holder (600) also includes for sample heating and the ceramic heating flake (607) of alternating temperature.
8. as claimed in claim 7 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
It is, between described specimen holder (600) and described cold head (400), is provided with insulating trip (500), institute
State specimen holder body (600a) include disc-shaped structure and be connected to below described disc-shaped structure rectangular
Body structure, described disc-shaped structure is connected with described insulating trip (500) and described cold head (400), institute
State and in disc-shaped structure, offer semi-circular recesses (603), be provided with in described semi-circular recesses 603 absolutely
Edge pad (602), titanium screw (601) passes described insulation spacer (602), described semi-circular recesses
(603) described specimen holder (600) is connected with described insulating trip (500) and described cold head (400).
9. as claimed in claim 8 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, its feature
Being, described cold head (400) is the hollow circular cylinder of oxygen-free copper material, described cold head (400) and institute
Stating the heat-transfer matcrial filled between liquid nitrogen cooling tube (102) is indium gallium alloy, described specimen holder (600)
Being processed by oxygen-free copper material, described resistance (605) is platinum resistance, and described tabletting (604) is beryllium
Copper tabletting, described upper end shell fragment (610) and described lower end shell fragment (611) are beryllium copper shell fragment, described absolutely
Embolium (500) is sapphire sheet, and described sample carrier (614) is molybdenum；Described insulation spacer (602)
For teflon insulation pad.
10. as claimed in claim 9 for grenz ray magnetic circular dichroism (mcd) low-temperature sample operating bench tray, it is special
Levying and be, the low-temperature sample operating bench tray of described grenz ray magnetic circular dichroism (mcd) farther includes temperature controller, in fall
During temperature, temperature monitoring signal is passed to described temperature controller displays temperature by described resistance (605),
In heating process, after design temperature, described temperature controller is by controlling described ceramic heating flake (607) two ends
Voltage heat described sample, temperature signal is fed back to described temperature controller by described resistance (605).
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| CN201510042519.0A CN105987923B (en) | 2015-01-28 | 2015-01-28 | Low-temperature sample operating bench tray for grenz ray magnetic circular dichroism (mcd) |
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| CN105548015A (en) * | 2016-01-13 | 2016-05-04 | 中国科学院合肥物质科学研究院 | Small-pore-diameter long-distance optical compatible vacuum sample cavity |
| CN106782740A (en) * | 2017-03-10 | 2017-05-31 | 中国科学院高能物理研究所 | A kind of device that capillary focusing X-ray is realized under ultra-high vacuum environment |
| CN106782740B (en) * | 2017-03-10 | 2018-01-02 | 中国科学院高能物理研究所 | A kind of device that capillary focusing X-ray is realized under ultra-high vacuum environment |
| CN107561101A (en) * | 2017-09-15 | 2018-01-09 | 中国工程物理研究院激光聚变研究中心 | A kind of grenz ray imaging device of vacuum flight pipeline |
| CN107677771A (en) * | 2017-09-15 | 2018-02-09 | 北京大学 | Ultrahigh vacuum cryogenic sample platform |
| CN109640500A (en) * | 2018-12-29 | 2019-04-16 | 苏州瑞派宁科技有限公司 | A kind of soft X_ray source |
| CN109900728A (en) * | 2019-03-19 | 2019-06-18 | 复旦大学 | A kind of soft X-ray spectroscopy measuring device |
| CN110014386A (en) * | 2019-04-22 | 2019-07-16 | 哈尔滨工业大学 | A kind of superhigh temperature sample fixture suitable for hot-electron emission property test |
| CN110987887A (en) * | 2019-12-10 | 2020-04-10 | 中国科学技术大学 | Miniature high temperature ODMR measures sample chamber |
| CN110988005A (en) * | 2019-12-17 | 2020-04-10 | 中国科学技术大学 | Strong permanent magnet device for magnetizing material under vacuum system |
| CN111007092A (en) * | 2020-01-02 | 2020-04-14 | 中国科学院化学研究所 | Low-temperature XRD testing device, testing equipment and testing system |
| CN113340813A (en) * | 2021-05-12 | 2021-09-03 | 西安交通大学 | Portable ultrahigh vacuum low-temperature observation cavity with micro-area characterization function and operation method |
| CN113566448A (en) * | 2021-07-13 | 2021-10-29 | 中国科学院上海微系统与信息技术研究所 | Cooling device for soft X-ray spectroscopy test |
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