CN101858874B - Microbeam proton fluorescence spectrometer - Google Patents
Microbeam proton fluorescence spectrometer Download PDFInfo
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- CN101858874B CN101858874B CN2010101809566A CN201010180956A CN101858874B CN 101858874 B CN101858874 B CN 101858874B CN 2010101809566 A CN2010101809566 A CN 2010101809566A CN 201010180956 A CN201010180956 A CN 201010180956A CN 101858874 B CN101858874 B CN 101858874B
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- optical convergence
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- fluorescence spectrometer
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Abstract
The invention discloses a microbeam proton fluorescence spectrometer, which comprises a proton accelerator (4), a proton convergence component and a detector (6), wherein the proton accelerator (4) is used for emitting protons, the proton convergence component is used for converging protons emitted by the proton accelerator (4), and the detector (6) is used for receiving the fluorescence excited from the protons; the proton convergence component is a capillary optical converger (1); and the capillary optical converger (1) at least comprises a single capillary (2). The fluorescence spectrometer converges protons by using the capillary optical converger (1); and the capillary optical converger (1) is made of glass capillaries, and does not need to be supported by a bracket. Thus, the invention has the advantages of simple structure and low cost, thereby realizing proton convergence in a simple, economical and practical way. In addition, the invention simplifies the structure of the fluorescence spectrometer and lowers the production and use cost of the fluorescence spectrometer.
Description
Technical field
The present invention relates to the proton fluorescence analysis technical field, particularly a kind of microbeam proton fluorescence spectrometer that sample is carried out the analysis of microcell proton fluorescence.
Background technology
The proton fluorescence technology is to utilize the characteristic X-ray of atom in the proton beam excited sample, through analyzing the information such as element composition that this characteristic X-ray obtains sample, because the detection limit of proton fluorescence technology is lower, uses so this technology has widely then.Along with people's improves constantly what sample analysis required, and the microbeam proton fluorescence technology receives much concern, because the microbeam proton fluorescence technology can be carried out two-dimentional proton fluorescence microcell scanning analysis to sample.In development microbeam proton fluorescence technology, proton is assembled, be the problem that at first need solve.
Because proton is the charged particle that has positive charge, when it moves in magnetic field, can receives the effect of magnetic field force and change direction of motion.Above-mentioned characteristic according to proton; In a kind of typical proton convergence technology; Utilize the electromagnetism convergence system that proton beam is assembled,, make proton be converged to microbeam through the electromagnetism convergence system through regulating the size and Orientation of the electromagnetic force that the electromagnetism convergence system provides.But because the structure of electromagnetism convergence system is comparatively cumbersome, the structure of the microbeam proton fluorescence spectrometer of feasible use electromagnetism convergence system is comparatively complicated; And the cost of electromagnetism convergence system is higher, and price is comparatively expensive, thereby makes that the cost of microbeam proton fluorescence spectrometer is higher.
Therefore, how to simplify the structure of microbeam proton fluorescence spectrometer, and reduce its production and use cost, just become the problem that those skilled in the art need solve.
Summary of the invention
The purpose of this invention is to provide a kind of microbeam proton fluorescence spectrometer, its structure is comparatively simple, and the cost of production and use is lower.
For solving the problems of the technologies described above; The present invention provides a kind of microbeam proton fluorescence spectrometer; Comprise: be used to launch the proton that the proton precessional magnetometer of proton, the proton that is used for said proton precessional magnetometer is launched assemble and assemble parts; And the detector that is used to receive the fluorescence that said proton inspires, it is kapillary optical convergence device that said proton is assembled parts, said kapillary optical convergence device comprises at least one single capillary.
Preferably, said kapillary optical convergence device comprises many single capillaries.
Preferably, said kapillary optical convergence device comprises 200,000-600,000 single capillaries.
Preferably, the cross sectional shape of said single capillary is circular.
Preferably, said kapillary optical convergence device is perpendicular to the regular hexagon that is shaped as of the central point line of each the said single capillary on the section edges of its central axial direction.
Preferably, the size in the import cross section of said kapillary optical convergence device and the size of its outlet are all less than the size of said kapillary optical convergence device except that import cross section and the cross section the outlet.
Preferably, said kapillary optical convergence device is a solid of revolution, and its bus is a predefined function.
Preferably, the size in said import cross section equates with the size of said outlet.
Microbeam proton fluorescence spectrometer provided by the present invention; Comprise be used to make proton to quicken and will speed up after the proton precessional magnetometer launched of proton; Proton gets into proton later on through proton precessional magnetometer and assembles parts, and is converged to proton beam through proton convergence parts, and proton beam forms little focal spot and beats on sample; Thereby excite sample to send fluorescence; Fluorescence gets into and is positioned at sample detector afterwards, and it is kapillary optical convergence device that above-mentioned proton is assembled parts, and this kapillary optical convergence device comprises at least one single capillary.Proton beam is after proton precessional magnetometer penetrates; Get into kapillary optical convergence device with suitable angle, in kapillary optical convergence device, proton beam reflects on capillary tube inner wall; After the several times reflection; Proton beam penetrates kapillary optical convergence device, and assembles and obtain little focal spot, thereby realizes the purpose that proton is assembled.This microbeam proton fluorescence spectrometer is assembled proton through kapillary optical convergence device; Kapillary optical convergence device is made up of glass capillary, and does not need large-scale stent support, and is simple in structure; And cost is lower; Thereby realized proton being assembled simple, economic, practically, and simplified the structure of microbeam proton fluorescence spectrometer, reduced the production and the use cost of microbeam proton fluorescence spectrometer.
A kind of preferred embodiment in; Said kapillary optical convergence device comprises 200,000-600,000 single capillaries; Theoretically; The quantity of included single capillary is many more in the kapillary optical convergence device, and the quantity of the proton of its convergence of process is many more in the same time, thereby has significantly improved the efficient of microbeam proton fluorescence spectrometer convergence proton.
In another preferred embodiment; Said kapillary optical convergence device is perpendicular to the regular hexagon that is shaped as in the cross section of its central axial direction; Also be many single capillaries when permutation and combination is kapillary optical convergence device, its xsect is arranged in orthohexagonal structure, so that situation about confirming in the quantity of single capillary; Make that the shared space of kapillary optical convergence device is less, thus the further compact structure of microbeam proton fluorescence spectrometer provided by the present invention.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of microbeam proton fluorescence spectrometer provided by the present invention;
Fig. 2 is the structural representation of a kind of embodiment of kapillary optical convergence's device provided by the present invention;
Fig. 3 is the cross sectional view of kapillary shown in Figure 2 optical convergence device perpendicular to its centerline direction.
Embodiment
Core of the present invention provides a kind of microbeam proton fluorescence spectrometer, and its structure is comparatively simple, and the cost of production and use is lower.
In order to make those skilled in the art person understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 1, Fig. 1 is the structural representation of microbeam proton fluorescence spectrometer embodiment provided by the present invention.
In a kind of embodiment; Microbeam proton fluorescence spectrometer provided by the present invention comprise be used to make proton to quicken and will speed up after the proton precessional magnetometer 4 launched of proton; Proton gets into proton later on through proton precessional magnetometer 4 and assembles parts, and is converged to proton beam through proton convergence parts, and proton beam forms little focal spot and beats on sample 5; Thereby excite sample 5 to send characteristic fluorescence; Characteristic fluorescence gets into and is positioned at sample detector 6 afterwards, and it is kapillary optical convergence device 1 that above-mentioned proton is assembled parts, and this kapillary optical convergence device 1 comprises at least one single capillary 2.
It is pointed out that and those skilled in the art will appreciate that the fluorescence that is inspired on the above-mentioned sample 5 is XRF.
Above-mentioned kapillary optical convergence device 1 mainly is made up of the glass tube of suitable length, and the high speed proton reflection of several times can take place after in getting into elongated glass tube, thereby realizes the convergence of proton.The length of the slender glass tube in the kapillary optical convergence device 1 and diameter should be confirmed according to the requirement of reality use and the factors such as applicability of device, not do qualification at this.
When proton beam after proton precessional magnetometer 4 penetrates, get into kapillary optical convergence device 1 with a certain suitable angle, in kapillary optical convergence device 1; Proton beam reflects on capillary tube inner wall, and after the several times reflection, proton beam penetrates kapillary optical convergence device 1; And convergence obtains little focal spot; Thereby realize the purpose that proton is assembled, little focal spot is got on the sample 5, thereby inspires characteristic X-ray fluorescence; The fluorescence that inspires gets into detector 6, thereby realizes the fluorescence analysis to testee 5.This microbeam proton fluorescence spectrometer is assembled through 1 pair of proton of kapillary optical convergence device; Kapillary optical convergence device 1 is made up of glass capillary, and does not need large-scale stent support, and is simple in structure; And cost is lower; Thereby realized proton being assembled simple, economic, practically, and simplified the structure of microbeam proton fluorescence spectrometer, reduced the production and the use cost of microbeam proton fluorescence spectrometer.
Can also further improve spectral fluorometer provided by the present invention.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of a kind of embodiment of kapillary optical convergence's device provided by the present invention; Fig. 3 is the cross sectional view of kapillary shown in Figure 2 optical convergence device perpendicular to its centerline direction.
In a kind of embodiment, kapillary provided by the present invention optical convergence device 1 can comprise many single capillaries 2.Apparently, with respect to single capillary, the combination of many single capillaries 2 can significantly improve the efficient that kapillary optical convergence device 1 is assembled proton.
Particularly; Said kapillary optical convergence device 1 can comprise 200,000-600,000 single capillaries 2; Theoretically; The quantity of included single capillary 2 is many more in the kapillary optical convergence device 1, and the quantity of the proton of its convergence of process is many more in the same time, thereby can significantly improve the efficient that the spectral fluorometer proton is assembled; But because technology and space are limited, 200,000 to 600,000 single capillaries 2 can either satisfy request for utilization, can assemble abundant proton again, thereby have guaranteed that kapillary optical convergence device 1 has higher convergence efficient.
The quantity of the single capillary 2 that comprises in the above-mentioned kapillary optical convergence device 1 also is not limited to 200,000 to 600,000, and its concrete quantity should confirm that its concrete quantity should not receive the qualification of this instructions embodiment according to many factors such as actual operating positions.
The cross sectional shape of above-mentioned single capillary 2 can be circle, so that it is comparatively smooth to guarantee that the reflection of proton beam in single capillary 2 carried out.
Above-mentioned kapillary optical convergence device 1 is perpendicular to the regular hexagon that is shaped as in the cross section of its central axial direction; Because kapillary optical convergence device 1 is arranged by some single capillaries 2 and formed, then above-mentioned kapillary optical convergence device 1 is perpendicular to the cross sectional shape on its central axial direction, combined by the cross section of some single capillaries 2 of forming this cross section; The cross sectional shape of above-mentioned single capillary 2 is circular; Then obvious, under the certain situation of number, after some circular arrangement combinations; Forming a regular hexagon can make this cross section have minimum area; So that in the situation that the quantity of single capillary is confirmed, make that the shared space of kapillary optical convergence device is minimum, thus the further compact structure of spectral fluorometer provided by the present invention.
The size in the import cross section 11 of above-mentioned kapillary optical convergence device 1 and the size of its outlet 12; All less than the size of said kapillary optical convergence device 1, so that improve the proton convergence scope of kapillary optical convergence device 1 except that import cross section 11 and cross section outlet 12.
Said kapillary optical convergence device 1 can be solid of revolution, and its bus is a predefined function.Above-mentioned predefined function can be approximated to be the combination of space ellipsoid quafric curve section, ellipsoid quafric curve section or the combination of ellipsoid quafric curve section and straight-line segment; And its radial variations is symmetrical for the central axis of lens; Thereby can realize the proton of multiple capillary optical convergence device converging and diverging in, and the proton that will disperse is converged to little focal spot than polarizers of big angle scope.
The size in above-mentioned import cross section 11 can equate with the size of outlet 12.Particularly, each geometry parameter of kapillary provided by the present invention optical convergence device 1 can be as shown in Figure 2, the inlet focal distance f
1Expression proton precessional magnetometer 4 is apart from the distance of kapillary optical convergence device 1 inlet end; The outlet focal distance f
2Expression kapillary optical convergence device 1 endpiece is to the distance at its focal spot place; L representes the length of kapillary optical convergence device 1; D
InThe entrance section size of expression kapillary optical convergence device 1; D
OutThe outlet size of expression kapillary optical convergence device 1; D
MaxThe full-size of expression kapillary optical convergence device 1, above-mentioned D
InWith D
OutCan equate, and all less than D
Max
More than microbeam proton fluorescence spectrometer provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (5)
1. microbeam proton fluorescence spectrometer; Comprise: be used to launch the proton that the proton precessional magnetometer (4) of proton, the proton that is used for said proton precessional magnetometer (4) is launched assemble and assemble parts; And the detector (6) that is used to receive the fluorescence that said proton inspires; It is characterized in that; It is kapillary optical convergence device (1) that said proton is assembled parts, and said kapillary optical convergence's device (1) comprises at least one single capillary (2), and the cross sectional shape of said single capillary (2) is circular; The size in the import cross section (11) of said kapillary optical convergence's device (1) and the size of its outlet (12) are all less than the size of said kapillary optical convergence's device (1) except that import cross section (11) and the cross section outlet (12).
2. microbeam proton fluorescence spectrometer according to claim 1 is characterized in that, said kapillary optical convergence's device (1) comprises many single capillaries (2).
3. microbeam proton fluorescence spectrometer according to claim 2 is characterized in that, said kapillary optical convergence's device (1) comprises 200,000 one 60 ten thousand single capillaries (2).
4. microbeam proton fluorescence spectrometer according to claim 3 is characterized in that, said kapillary optical convergence's device (1) is a solid of revolution, and its bus is a predefined function.
5. microbeam proton fluorescence spectrometer according to claim 4 is characterized in that, the size in said import cross section (11) equates with the size of said outlet (12).
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| CN2010101809566A CN101858874B (en) | 2010-05-18 | 2010-05-18 | Microbeam proton fluorescence spectrometer |
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| CN2010101809566A CN101858874B (en) | 2010-05-18 | 2010-05-18 | Microbeam proton fluorescence spectrometer |
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| CN101858874B true CN101858874B (en) | 2012-07-25 |
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| CN116754431B (en) * | 2023-08-18 | 2023-11-17 | 中国工程物理研究院激光聚变研究中心 | Transient proton fluorescence detection system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989012817A1 (en) * | 1988-06-23 | 1989-12-28 | Anders Rindby | X-ray microbeam spectrometer |
| CN101308103A (en) * | 2008-07-14 | 2008-11-19 | 成都理工大学 | Microbeam micro- zone X ray detecting probe analyzer |
| CN101498647A (en) * | 2009-03-20 | 2009-08-05 | 北京师范大学 | Micro-beam X-ray fluorescence equipment used for atmosphere particle single-particle analysis |
| CN201417256Y (en) * | 2008-10-20 | 2010-03-03 | 北京师范大学 | Capillary X-ray lens confocal micro-area X-ray spectral fluorometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2005094318A2 (en) * | 2004-03-29 | 2005-10-13 | Jmar Research, Inc. | Morphology and spectroscopy of nanoscale regions using x-rays generated by laser produced plasma |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989012817A1 (en) * | 1988-06-23 | 1989-12-28 | Anders Rindby | X-ray microbeam spectrometer |
| CN101308103A (en) * | 2008-07-14 | 2008-11-19 | 成都理工大学 | Microbeam micro- zone X ray detecting probe analyzer |
| CN201417256Y (en) * | 2008-10-20 | 2010-03-03 | 北京师范大学 | Capillary X-ray lens confocal micro-area X-ray spectral fluorometer |
| CN101498647A (en) * | 2009-03-20 | 2009-08-05 | 北京师范大学 | Micro-beam X-ray fluorescence equipment used for atmosphere particle single-particle analysis |
Non-Patent Citations (1)
| Title |
|---|
| 岳伟生等.用质子微探针研究研究上海吴淞空气含铅颗粒物来源.《中国环境科学》.2003,第23卷(第6期),第614－617页. * |
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