CN202471983U - Flash X-ray energy spectrum measuring equipment based on absorption iteration method - Google Patents
Flash X-ray energy spectrum measuring equipment based on absorption iteration method Download PDFInfo
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- CN202471983U CN202471983U CN2012201180883U CN201220118088U CN202471983U CN 202471983 U CN202471983 U CN 202471983U CN 2012201180883 U CN2012201180883 U CN 2012201180883U CN 201220118088 U CN201220118088 U CN 201220118088U CN 202471983 U CN202471983 U CN 202471983U
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- quantimeter
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Abstract
The utility model provides a piece of flash X-ray energy spectrum measuring equipment based on an absorption iteration method. A support structure of the measuring equipment is a round plate made of organic glass, the round plate has diameter of L and thickness of d; pores are evenly formed on circular rings with diameter of L1 within the round plate, wherein L1 is smaller than L, the number of the pores is 12 and the diameters of the pores are all r; a cylindrical absorber is arranged in each of the 12 pores, and the diameters of the 12 absorbers are the same and are all slightly smaller than r, so that the absorbers can be put into the pores and can be kept stable in structure; the thicknesses of the absorbers are different and are respectively h1,h2 ellipsis h12, and the thicknesses are sequentially increased from h1 to h12; the absorbers are placed in the pores in symmetry along the middle line of the round plate so as to ensure that the whole measuring equipment does not incline when the round plate is vertically put; and alanine dose meters are pasted on the backsides of all the 12 absorbers to measure the dosage of the X-rays. With the measuring equipment provided by the utility model, the scattering of the X-rays is greatly reduced, and the distances among the absorbers are large, so the scattering of the X-rays among the absorbers is weakened.
Description
Technical field
The utility model belongs to the technical field of spark photograph, is specifically related to a kind of flash X-ray spectral measurement device.
Background technology
In the spark photograph process,, therefore when imaging analysis, must consider the power spectrum influence of incident X-rays because it is different to penetrate the attenuation degree of the photon of different-energy after the same thickness material.It is essential that this just makes to the measurement of the power spectrum of incident flash X-ray.Have only the flash X-rays of tens nanoseconds for the single duration, conventional spectral measurement method is inappropriate.
Current measuring methods mainly is based on absorber to different these ultimate principles of the attenuation coefficient of the X ray of different-energy.Like a kind of spiral sphenoid measurement mechanism of mentioning in the document " Li Chenggang; sigmatron parameter measurement research, 2004, China Engineering Physics Research Institute's master thesis "; This method is once glistened and can be obtained the dosage of X ray after the decay of different-thickness absorber; And then just can obtain the incident X-rays power spectrum through finding the solution system of linear equations, but the scattering that the spiral sphenoid causes itself is very serious, and measuring error is very big.Designed a kind of scanning sphenoid indirect measurement method in the document " wrinkle is brilliant, Wang Jianguang, Wang Wenbin etc.; X-ray energy spectrum indirect measurement method, optical technology, 2008; 24 (4): 503-508 "; Scattering is less, only thickness of energy measurement but this method is glistened each time, and the guide number that therefore needs is excessive.2010, Xibei Nuclear Techn Inst developed a high power pulse gamma-ray spectrometey (referring to document " Su Zhaofeng, Yang Hailiang; Sun Jianfeng etc., the development of high power pulse gamma-rays energy spectrometer, the light laser and the particle beams; 2010,22 (5): 1137-1140 "), and this spectrometer has been constructed 7 collimating apertures with lead; The absorber of different-thickness is placed in each hole, uses the Si-PIN detector to survey behind the absorber, and this method has reduced scattering to a certain extent; But the colimated light system of processing with lead material is still bigger to the scattering of X ray, and is especially very big to the detector influence behind the thin absorber; And the Si-PIN detector is to utilize waveform character to obtain the energy of X ray deposition; Can't repeatedly glistening, (dosage of a flash X-ray after the absorber decay is less for cumulative measurement; Statistical error is bigger, so the cumulative measurement that need repeatedly glisten under some occasion).
Summary of the invention
The utility model is intended to solve the big problem of the scattering that exists in the existing flash X-ray measuring technique and the problem of cumulative measurement repeatedly.
The utility model for the technical scheme that solves the problems of the technologies described above employing is:
A kind of this devices support structures is a disk that organic glass is processed based on the flash X-ray spectral measurement device that absorbs process of iteration, and diameter is L, and thickness is d, is L in disk inside with the diameter
1Annulus on evenly perforate, wherein L
1＜L establishes 12 holes altogether, and bore dia is r; In each hole in 12 holes, place the column type absorber, the diameter of 12 absorbers is identical and all be slightly less than r, makes that absorbing physical efficiency puts into the hole and can keep Stability Analysis of Structures; The thickness of absorber has nothing in common with each other, and is followed successively by h
1, h
2..., h
12, h wherein
1＜h
2＜...＜h
12, place along the center line of disk symmetry during placement, can guarantee under the situation that disk vertically puts that whole device can run-off the straight; Behind each absorber of 12 absorbers, be pasted with the alanine quantimeter and carry out the measurement of x-ray dose; Every quantimeter is that d, length are the alanine paraffin fusion right cylinder headtotail of l by two diameters; And use diameter to be D, length is that the polyethylene pipe of L is sealed to form.
Preferably, every quantimeter of described alanine quantimeter is that d, length are the alanine paraffin fusion right cylinder headtotail of l by two diameters, and uses diameter to be D, and length is L
2Tygon be sealed to form, satisfy to absorb physical efficiency simultaneously and put into above-mentioned hole and can keep Stability Analysis of Structures.
Preferably, the d=3mm of described alanine quantimeter, l=8mm, D=4mm, L
2=30mm.
Preferably, described alanine quantimeter vertically sticks on the end face of cylindrical absorbent body.
Advantage that the utility model is compared with prior art and good effect are:
The first, the utility model adopts the material of organic glass as supporter, and the scattering of X ray is reduced greatly; And the spacing of each absorber is also bigger, has weakened the scattering between the absorber.
The second, the utility model adopts the alanine quantimeter to carry out the measurement of X ray, has the following advantages:
1. good measure linear scope is arranged, and maximum can reach 10
5Gy;
2. measuring accuracy is preferably arranged, and irradiation sum of errors reading error sum can be superior to 5%;
3. on electron paramagnetic spin resonance spectrometer, can read the absorbed dose that each alanine quantimeter is write down easily; And do not destroy the dose value that is write down when reading;
4. can repeatedly repeat to read the convenient keeping of filing;
5. can duplicate measurements use, measure the dose value record that can add up.
Description of drawings
Fig. 1 is that the utility model is based on the flash X-ray spectral measurement device synoptic diagram that absorbs process of iteration;
Fig. 2 is the structural diagrams intention of alanine quantimeter;
Fig. 3 is based on the novel flash X-ray spectral measurement synoptic diagram that absorbs process of iteration;
Fig. 4 is an alanine quantimeter scheme of installation;
Among the figure, 1-12 is the column type absorber; 13 is the hole; 14 is support disk; 15 is disk left view center line; 16 is the alanine quantimeter; 17 is target; 21 are alanine paraffin fusion right cylinder 1; 22 are alanine paraffin fusion right cylinder 2; 23 is polyethylene pipe.
Embodiment
Specify the utility model below in conjunction with accompanying drawing and specific embodiment.
The flash X-ray spectral measurement device synoptic diagram based on absorbing process of iteration of the utility model is as shown in Figure 1.Wherein, Fig. 1 (a) is a front elevation, and Fig. 1 (b) is a left view.Supporting construction is a disk that organic glass is processed, and diameter is L, and thickness is d.Is L in disk inside with the diameter
1(L
112 holes are established in evenly perforate altogether on＜L) the annulus, and bore dia is r.
In each hole, place the column type absorber, the diameter of 12 absorbers is identical, all is slightly less than r, makes that absorbing physical efficiency puts into the hole and can keep Stability Analysis of Structures.The thickness of absorber has nothing in common with each other, and is followed successively by h
1, h
2..., h
12, it satisfies h
1＜h
2＜...＜h
12, preferred, h
1, h
2..., h
12Can obtain through computer simulation analysis.The putting position relation of column type absorber is shown in the left view of Fig. 1 (b).Place along the left view center line of disk 15 symmetries during placement, can guarantee that whole device can run-off the straight under the situation that disk vertically puts.
Be pasted with the alanine quantimeter behind the absorber and carry out the measurement of x-ray dose; The structural drawing of quantimeter is as shown in Figure 2; Fig. 2 only is the general location that has schematically provided the column type absorber; Adopted the method that schematically shows of perspective, every quantimeter is that d, length are the alanine paraffin fusion right cylinder headtotail of l by two diameters, and uses diameter to be L as D, length
2Polyethylene pipe be sealed to form.Wherein, d=3mm, l=8mm, D=4mm, L
2=30mm.
Flash X-ray spectral measurement synoptic diagram based on absorbing process of iteration is as shown in Figure 3.High-velocity electrons target practice 17 backs produce the high energy flash X-rays.Distance between described measurement mechanism and the target is D1.After the one or many flash of light; Can obtain the power spectrum of incident flash X-ray again through mathematical operation according to the measured dose value of alanine quantimeter, wherein, Fig. 4 is the scheme of installation of alanine quantimeter; Preferably, the alanine quantimeter vertically sticks on the end face of cylindrical absorbent body.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (4)
1. one kind based on the flash X-ray spectral measurement device that absorbs process of iteration, and it is characterized in that: this devices support structures is a disk that organic glass is processed, and diameter is L, and thickness is d, is L in disk inside with the diameter
1Annulus on evenly perforate, wherein L
1＜L establishes 12 holes altogether, and bore dia is r; In each hole in 12 holes, place the column type absorber, the diameter of 12 absorbers is identical and all be slightly less than r, makes that absorbing physical efficiency puts into the hole and can keep Stability Analysis of Structures; The thickness of absorber has nothing in common with each other, and is followed successively by h
1, h
2..., h
12, h wherein
1＜h
2＜...＜h
12, place along the center line of disk symmetry during placement, can guarantee under the situation that disk vertically puts that whole device can run-off the straight; Behind each absorber of 12 absorbers, be pasted with the alanine quantimeter and carry out the measurement of x-ray dose.
2. according to claim 1 a kind of based on the flash X-ray spectral measurement device that absorbs process of iteration; It is characterized in that: every quantimeter of described alanine quantimeter is that d, length are the alanine paraffin fusion right cylinder headtotail of l by two diameters; And use diameter to be D, length is L
2Tygon be sealed to form, satisfy to absorb physical efficiency simultaneously and put into above-mentioned hole and can keep Stability Analysis of Structures.
3. according to claim 2 a kind of based on the flash X-ray spectral measurement device that absorbs process of iteration, it is characterized in that: the d=3mm of described alanine quantimeter, l=8mm, D=4mm, L
2=30mm.
4. according to claim 1 a kind of based on the flash X-ray spectral measurement device that absorbs process of iteration, it is characterized in that: described alanine quantimeter vertically sticks on the end face of cylindrical absorbent body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201180883U CN202471983U (en) | 2012-03-19 | 2012-03-19 | Flash X-ray energy spectrum measuring equipment based on absorption iteration method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201180883U CN202471983U (en) | 2012-03-19 | 2012-03-19 | Flash X-ray energy spectrum measuring equipment based on absorption iteration method |
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| Publication Number | Publication Date |
|---|---|
| CN202471983U true CN202471983U (en) | 2012-10-03 |
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ID=46920134
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201180883U Expired - Fee Related CN202471983U (en) | 2012-03-19 | 2012-03-19 | Flash X-ray energy spectrum measuring equipment based on absorption iteration method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425273A (en) * | 2014-09-17 | 2016-03-23 | 中国科学技术大学 | Apparatus and method of absorber array for measuring high flux X-ray power spectrum |
| CN105425272A (en) * | 2014-09-17 | 2016-03-23 | 中国科学技术大学 | Absorber array for measuring high flux X-ray power spectrum |
| CN106198583A (en) * | 2016-07-05 | 2016-12-07 | 中国工程物理研究院激光聚变研究中心 | A kind of absorption process of equal value measuring photographic film X-ray energy spectrum sensitivity |
| CN107843911A (en) * | 2017-10-16 | 2018-03-27 | 中国计量科学研究院 | A kind of device for improving alanine dosemeter measurement signal to noise ratio |
| CN110161070A (en) * | 2019-05-22 | 2019-08-23 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of method and apparatus using photoelectron spectroscopy measurement band curvature |
-
2012
- 2012-03-19 CN CN2012201180883U patent/CN202471983U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425273A (en) * | 2014-09-17 | 2016-03-23 | 中国科学技术大学 | Apparatus and method of absorber array for measuring high flux X-ray power spectrum |
| CN105425272A (en) * | 2014-09-17 | 2016-03-23 | 中国科学技术大学 | Absorber array for measuring high flux X-ray power spectrum |
| CN106198583A (en) * | 2016-07-05 | 2016-12-07 | 中国工程物理研究院激光聚变研究中心 | A kind of absorption process of equal value measuring photographic film X-ray energy spectrum sensitivity |
| CN106198583B (en) * | 2016-07-05 | 2019-03-05 | 中国工程物理研究院激光聚变研究中心 | A kind of absorption process of equal value measuring the sensitivity of photographic film X-ray energy spectrum |
| CN107843911A (en) * | 2017-10-16 | 2018-03-27 | 中国计量科学研究院 | A kind of device for improving alanine dosemeter measurement signal to noise ratio |
| CN107843911B (en) * | 2017-10-16 | 2019-07-02 | 中国计量科学研究院 | A kind of device improving alanine dosemeter measurement signal-to-noise ratio |
| CN110161070A (en) * | 2019-05-22 | 2019-08-23 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of method and apparatus using photoelectron spectroscopy measurement band curvature |
| CN110161070B (en) * | 2019-05-22 | 2022-03-08 | 中国科学院苏州纳米技术与纳米仿生研究所 | Method and device for measuring energy band bending by utilizing photoelectron spectrum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150319 |
|
| EXPY | Termination of patent right or utility model |