CN101806759B - X-ray spectrometer and mineral composition analyzer - Google Patents
X-ray spectrometer and mineral composition analyzer Download PDFInfo
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- CN101806759B CN101806759B CN2010101253803A CN201010125380A CN101806759B CN 101806759 B CN101806759 B CN 101806759B CN 2010101253803 A CN2010101253803 A CN 2010101253803A CN 201010125380 A CN201010125380 A CN 201010125380A CN 101806759 B CN101806759 B CN 101806759B
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Abstract
The invention provides an X-ray spectrometer and a mineral composition analyzer, belonging to the technical field of optical measurement. This beam splitter includes: the spectrometer comprises a spectrometer shell, a crystal retainer, a curved surface spectrometer crystal, an incident beryllium sheet window, an emergent beryllium sheet window, an incident adjusting window and an emergent slit part; the curved surface light splitting crystal and the crystal holder are both arranged in the light splitter shell, and the curved surface light splitting crystal is fixedly arranged on the crystal holder; the incident beryllium sheet window and the emergent beryllium sheet window are respectively arranged on the optical splitter shells at two sides of the curved surface optical splitter crystal, and the incident beryllium sheet window, the emergent beryllium sheet window and the arc-shaped reflecting surface of the curved surface optical splitter crystal are distributed in a triangular shape; the incident adjusting window is arranged in the incident beryllium sheet window; the exit slit component is arranged on a light path between the curved surface light splitting crystal and the exit beryllium sheet window in the light splitter shell. The spectrometer shortens the X-ray transmission distance, reduces the absorption of X-rays by air in transmission, and can improve the resolution and the measurement precision of a mineral composition analyzer.
Description
Technical field
The present invention relates to field of optical measuring technologies, especially relate to a kind of X ray optical splitter and mineralogical composition analyser.
Background technology
The mineralogical composition analyser is divided into two kinds on Wavelength dispersion type and energy dispersion type, and its key distinction is whether the X ray optical splitter is arranged.Wavelength dispersion type mineralogical composition analyser with X ray optical splitter has many advantages than the energy dispersive appearance, and for example its resolution is high, measuring accuracy is high.Therefore mineralogical composition analyser at present commonly used is a Wavelength dispersion type; And the analyzing crystal in the Wavelength dispersion type mineralogical composition analyser commonly used is a planar structure; The application but present known curved crystals optical splitter is not also achieved success on the mineralogical composition analyser; Its main cause is a curved surface analyzing crystal light path system complex design; Need complicated light channel structures such as incident adjustment passage, outgoing adjustment passage, optical path length needs vaccum-pumping equipment to reduce the loss that X ray causes owing to absorption of air in the light path communication process.These reasons have caused the curved crystals optical splitter can not be used on the mineralogical composition analyser.
Summary of the invention
In view of above-mentioned existing in prior technology problem; The purpose of the embodiment of the invention provides a kind of X ray optical splitter and mineralogical composition analyser, its compact conformation, and light path is simple; Do not need vaccum-pumping equipment to vacuumize, can be used in the industry of flow process property on the mineral analytical instrument.
The objective of the invention is to realize through following technical scheme:
The embodiment of the invention provides a kind of X ray optical splitter, comprising:
Optical splitter shell, crystal retainer, curved surface analyzing crystal, incident beryllium sheet window, outgoing beryllium sheet window, incident adjustment window and exit slit parts;
Said curved surface analyzing crystal and crystal retainer all are arranged in the optical splitter shell, and said curved surface analyzing crystal is fixedly installed on the crystal retainer;
Said incident beryllium sheet window and outgoing beryllium sheet window are separately positioned on the optical splitter shell of curved surface analyzing crystal both sides, distribution triangular in shape between the curved reflecting surface of said incident beryllium sheet window, outgoing beryllium sheet window and curved surface analyzing crystal;
Said incident adjustment window is arranged in the incident beryllium sheet window;
Said exit slit parts are arranged on the curved surface analyzing crystal and the light path between the outgoing beryllium sheet window in the optical splitter shell.
Said incident beryllium sheet window is made up of round beryllium sheet and incident through hole, and said incident through hole is arranged on the sidewall of optical splitter shell, and said round beryllium sheet mounts on the inlet that covers the incident through hole;
Said outgoing beryllium sheet window is made up of square beryllium sheet and outgoing through hole, and said outgoing through hole is arranged on the opposite side sidewall of optical splitter shell, and said square beryllium sheet mounts in the outlet that covers the outgoing through hole.
Said round beryllium sheet is that diameter is that 15mm, thickness are the round beryllium sheet of 0.3mm.
Said square beryllium sheet is the rectangle beryllium sheet of long 27.2mm * wide 19.2mm * thick 0.3mm.
Said incident adjustment window is a cylindrical structure, which is provided with the incident through hole, and said incident adjustment window can be at inboard angle and the dosage of adjusting the X ray after getting into incident beryllium sheet window that rotates of incident beryllium sheet window.
Said curved surface analyzing crystal adopts the curved surface analyzing crystal of log spiral type.
It is the lithium fluoride crystal of 2d=0.402 that said curved surface analyzing crystal adopts spacing of lattice.
Said exit slit parts are platy structure, which is provided with through hole.
Said optical splitter shell is the hexagon diamond structure.
The embodiment of the invention also provides a kind of mineralogical composition analyser, comprising: X-ray tube, high-voltage power supply, characteristic X-ray detecting device and signal processing unit also comprise:
The X ray optical splitter; Said X ray optical splitter adopts above-mentioned X ray optical splitter; Said X ray optical splitter is arranged between X-ray tube and the characteristic X-ray detecting device, and a kind of of characteristic X-ray of the multiple metallic element that is used for X-ray tube is inspired separates.
From the technical scheme that the invention described above embodiment provides, can find out; Cooperate with the curved surface analyzing crystal that fixedly installs through incident adjustment window being set in incident beryllium sheet window and outgoing slot set part being set on emitting light path in the embodiment of the invention, form a kind of X ray optical splitter simple and compact for structure.Incident adjustment window and exit slit assembly cooperate and the focussing force of curved surface analyzing crystal under; Make the propagation distance of X ray in this optical splitter shorten greatly; Thereby X ray is reduced in communication process by the amount of absorption of air; Spectroscopical effeciency can be greatly improved, and optical splitter is used become possibility under situation about not vacuumizing.Therefore, this optical splitter can be applied on the mineralogical composition analyser easily.
Description of drawings
The structural representation of the optical splitter that Fig. 1 provides for the embodiment of the invention;
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
Embodiment one
Present embodiment one provides a kind of X ray optical splitter, and this optical splitter can be used on the mineralogical composition analyser, and is as shown in Figure 1, and this optical splitter comprises:
Wherein, said curved surface analyzing crystal 3 all is arranged in the optical splitter shell 1 with crystal retainer 2, and optical splitter shell 1 is the hexagon diamond structure, and said curved surface analyzing crystal 3 is fixedly installed on the crystal retainer 2;
Described incident beryllium sheet window 4 is separately positioned on optical splitter shell 1 sidewall of curved surface analyzing crystal 3 both sides with outgoing beryllium sheet window 5, distribution triangular in shape between the curved reflecting surface of said incident beryllium sheet window 4, outgoing beryllium sheet window 5 and curved surface analyzing crystal 4; Wherein, Said incident beryllium sheet window is made up of round beryllium sheet and incident through hole; Said incident through hole is arranged on the sidewall of optical splitter shell 1, and said round beryllium sheet mounts on the inlet that covers the incident through hole, and it is that 15mm, thickness are the round beryllium sheet of 0.3mm that said round beryllium sheet generally adopts diameter; And outgoing beryllium sheet window is made up of square beryllium sheet and outgoing through hole; Said outgoing through hole is arranged on the opposite side sidewall of optical splitter shell 1; Said square beryllium sheet mounts in the outlet that covers the outgoing through hole; Square beryllium sheet generally adopts rectangle beryllium sheet, as adopting the rectangle beryllium sheet of long 27.2mm * wide 19.2mm * thick 0.3mm.The setting of this incident beryllium sheet window and outgoing beryllium sheet window; At the round beryllium sheet of incident end setting and the square beryllium sheet of exit end setting; Can play carrying out good protection against the tide, dustproof effect in the optical splitter shell 1, thereby avoid the moist influence that the curved surface analyzing crystal is caused with dust, make that also this optical splitter can continue to use under the situation that need not vacuumize; Can be because of not the making moist and receive effect of dust of curved surface analyzing crystal, and the precision of this optical splitter and spectroscopical effeciency are descended.
Described incident adjustment window 6 is arranged in the incident beryllium sheet window 4; Incident adjustment window 6 be a spherical structure, which is provided with the incident through hole, and said incident adjustment window 6 can rotate in that incident beryllium sheet window is inboard, with the angle and the dosage of the X ray of the incident beryllium sheet window 4 of adjustment entering optical splitter;
Described exit slit parts 7 are arranged on the curved surface analyzing crystal 3 and the light path between the outgoing beryllium sheet window 5 in the optical splitter shell 1; Exit slit parts 7 are platy structure, which is provided with through hole and are used to make the X ray after 3 reflections of curved surface analyzing crystal to export outgoing beryllium sheet window 5 to.
Curved surface analyzing crystal 3 in the above-mentioned optical splitter can adopt the curved surface analyzing crystal of log spiral type, is lithium fluoride (LiF) crystal of 2d=0.402 as adopting spacing of lattice.
To confirming of curved surface analyzing crystal 3 curved surface radians, can adopt following method: the characteristic X-ray as to a certain element carries out beam split, according to Bragg's law n λ=2dsin θ, calculates incident angle θ;
With incident angle θ-substitution log spiral equation, according to obtaining corresponding log spiral type curved surface behind the suitable initial value of the size Selection of analyzing crystal shell; Curved surface analyzing crystal and crystal retainer all are processed into the curve form that calculates, and the curved surface analyzing crystal is fixed on the crystal retainer.
The crystal retainer that is fixed with the curved surface analyzing crystal is fixed in the analyzing crystal shell,, after being met the spectrophotometric result of requirement, the crystal retainer is fixed getting final product according to the position of the position of light path relation adjustment incident adjustment window and exit slit assembly.
When above-mentioned optical splitter uses; X ray gets in the optical splitter shell through incident adjustment window via the incident beryllium sheet window on the sidewall on the optical splitter shell; Regulate the dosage and the angle of incident X-rays through rotation incident adjustment position of window; The x-ray irradiation that gets into after the characteristic X-ray after the analyzing crystal beam split is via the exit slit component intercepts, penetrates the entering light path system through outgoing beryllium sheet window on another sidewall of optical splitter shell to the curved reflecting surface of curved surface analyzing crystal.
This optical splitter formation compact; Incident adjustment window and exit slit assembly cooperate and the focussing force of curved surface analyzing crystal under; Make the propagation distance of X ray in this optical splitter shorten greatly; Thereby X ray is reduced by the amount of absorption of air in communication process, and spectroscopical effeciency is greatly improved, and optical splitter is used become possibility under situation about not vacuumizing.
Embodiment two
Present embodiment two provides a kind of mineralogical composition analyser, and this analyser comprises: X-ray tube, high-voltage power supply, characteristic X-ray detecting device and signal processing unit also comprise:
The X ray optical splitter; Said X ray optical splitter adopts the X ray optical splitter that provides in the foregoing description one; Said X ray optical splitter is arranged between X-ray tube and the characteristic X-ray detecting device, and a kind of of characteristic X-ray of the multiple metallic element that this X ray optical splitter is used for X-ray tube is inspired separates, and sends the characteristic X-ray detecting device to; Thereby handle through signal processing unit, accomplish mineralogical composition and detect.
In sum, cooperate with the curved surface analyzing crystal that fixedly installs through incident adjustment window being set in incident beryllium sheet window and outgoing slot set part being set on emitting light path in the embodiment of the invention, form a kind of X ray optical splitter simple and compact for structure.Incident adjustment window and exit slit assembly cooperate and the focussing force of curved surface analyzing crystal under; Make the propagation distance of X ray in this optical splitter shorten greatly; Thereby X ray is reduced in communication process by the amount of absorption of air; Spectroscopical effeciency is greatly improved, and optical splitter is used become possibility under situation about not vacuumizing.Therefore, this optical splitter can be applied on the mineralogical composition analyser easily.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (9)
1. an X ray optical splitter is characterized in that, comprising:
Optical splitter shell, crystal retainer, curved surface analyzing crystal, incident beryllium sheet window, outgoing beryllium sheet window, incident adjustment window and exit slit parts;
Said curved surface analyzing crystal and crystal retainer all are arranged in the optical splitter shell, and said curved surface analyzing crystal is fixedly installed on the crystal retainer;
Said incident beryllium sheet window and outgoing beryllium sheet window are separately positioned on the optical splitter shell of curved surface analyzing crystal both sides, distribution triangular in shape between the curved reflecting surface of said incident beryllium sheet window, outgoing beryllium sheet window and curved surface analyzing crystal;
Said incident adjustment window is arranged in the incident beryllium sheet window;
Said exit slit parts are arranged on the curved surface analyzing crystal and the light path between the outgoing beryllium sheet window in the optical splitter shell;
Said incident beryllium sheet window is made up of round beryllium sheet and incident through hole, and said incident through hole is arranged on the sidewall of optical splitter shell, and said round beryllium sheet mounts on the inlet that covers the incident through hole;
Said outgoing beryllium sheet window is made up of square beryllium sheet and outgoing through hole, and said outgoing through hole is arranged on the opposite side sidewall of optical splitter shell, and said square beryllium sheet mounts in the outlet that covers the outgoing through hole.
2. X ray optical splitter according to claim 1 is characterized in that, said round beryllium sheet is that diameter is that 15mm, thickness are the round beryllium sheet of 0.3mm.
3. X ray optical splitter according to claim 1 is characterized in that, said square beryllium sheet is the rectangle beryllium sheet of long 27.2mm * wide 19.2mm * thick 0.3mm.
4. X ray optical splitter according to claim 1; It is characterized in that; Said incident adjustment window is a cylindrical structure, which is provided with the incident through hole, and said incident adjustment window can be at inboard angle and the dosage of adjusting the X ray after getting into incident beryllium sheet window that rotates of incident beryllium sheet window.
5. X ray optical splitter according to claim 1 is characterized in that, said curved surface analyzing crystal adopts the curved surface analyzing crystal of log spiral type.
6. X ray optical splitter according to claim 5 is characterized in that, it is the lithium fluoride crystal of 2d=0.402 that said curved surface analyzing crystal adopts spacing of lattice.
7. X ray optical splitter according to claim 1 is characterized in that, said exit slit parts are platy structure, which is provided with through hole.
8. X ray optical splitter according to claim 1 is characterized in that, said optical splitter shell is the hexagon diamond structure.
9. mineralogical composition analyser comprises: X-ray tube, high-voltage power supply, characteristic X-ray detecting device and signal processing unit, it is characterized in that, and also comprise:
X ray optical splitter, said X ray optical splitter adopt aforesaid right to require 1～8 each described X ray optical splitter, and said X ray optical splitter is arranged between X-ray tube and the characteristic X-ray detecting device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101253803A CN101806759B (en) | 2010-03-16 | 2010-03-16 | X-ray spectrometer and mineral composition analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101253803A CN101806759B (en) | 2010-03-16 | 2010-03-16 | X-ray spectrometer and mineral composition analyzer |
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| CN101806759A CN101806759A (en) | 2010-08-18 |
| CN101806759B true CN101806759B (en) | 2012-07-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372298A (en) * | 2014-08-24 | 2016-03-02 | 中国石油集团渤海钻探工程有限公司 | Analysis method for formation rock mineral constituents |
| CN104316426B (en) * | 2014-10-24 | 2017-08-04 | 北京矿冶研究总院 | Ore availability analysis method |
| CN112748142A (en) * | 2020-12-25 | 2021-05-04 | 核工业北京地质研究院 | Method for quantitatively analyzing beryllium content in-situ micro-area |
Citations (6)
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|---|---|---|---|---|
| US4625323A (en) * | 1983-09-19 | 1986-11-25 | Yoshiharu Okaya | Equipment for spectral radiology |
| CN2791641Y (en) * | 2004-08-18 | 2006-06-28 | 天津中和科技有限公司 | X-ray bent-face crystal beam-splitting device |
| JP2007093581A (en) * | 2005-09-01 | 2007-04-12 | Jeol Ltd | Wavelength dispersive x-ray spectrometer |
| CN101446562A (en) * | 2007-11-27 | 2009-06-03 | 天津滨海北方辐照技术有限公司 | Three-element dual alkalinity analysis system |
| CN100590429C (en) * | 2006-09-21 | 2010-02-17 | 北京邦鑫伟业技术开发有限公司 | Fixed element light splitter for co-shaping x-ray fluorescence spectrometer |
| CN201653941U (en) * | 2010-03-16 | 2010-11-24 | 北京矿冶研究总院 | X-ray spectrometer and mineral composition analyzer |
-
2010
- 2010-03-16 CN CN2010101253803A patent/CN101806759B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625323A (en) * | 1983-09-19 | 1986-11-25 | Yoshiharu Okaya | Equipment for spectral radiology |
| CN2791641Y (en) * | 2004-08-18 | 2006-06-28 | 天津中和科技有限公司 | X-ray bent-face crystal beam-splitting device |
| JP2007093581A (en) * | 2005-09-01 | 2007-04-12 | Jeol Ltd | Wavelength dispersive x-ray spectrometer |
| CN100590429C (en) * | 2006-09-21 | 2010-02-17 | 北京邦鑫伟业技术开发有限公司 | Fixed element light splitter for co-shaping x-ray fluorescence spectrometer |
| CN101446562A (en) * | 2007-11-27 | 2009-06-03 | 天津滨海北方辐照技术有限公司 | Three-element dual alkalinity analysis system |
| CN201653941U (en) * | 2010-03-16 | 2010-11-24 | 北京矿冶研究总院 | X-ray spectrometer and mineral composition analyzer |
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