CN103702503A - Dual-purposed irradiation device for filtering beam X rays and fluorescent X rays - Google Patents
Dual-purposed irradiation device for filtering beam X rays and fluorescent X raysDownload PDFInfo
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- CN103702503A CN103702503ACN201410002114.XACN201410002114ACN103702503ACN 103702503 ACN103702503 ACN 103702503ACN 201410002114 ACN201410002114 ACN 201410002114ACN 103702503 ACN103702503 ACN 103702503A
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- 238000001914filtrationMethods0.000titledescription8
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- 238000013461designMethods0.000description4
- 238000010586diagramMethods0.000description4
- 238000012544monitoring processMethods0.000description3
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- 230000009977dual effectEffects0.000description2
- 230000005281excited stateEffects0.000description2
- 238000007689inspectionMethods0.000description2
- 238000012986modificationMethods0.000description2
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Abstract
Translated fromChineseDescription
Technical field
The present invention relates to a kind of filter tow X ray and fluorescent X-ray double-purpose irradiation unit.
Background technology
X-ray production apparatus is a kind of comparatively conventional ray radiation source, also referred to as X-ray machine, is widely used in the fields such as medical diagnosis, industrial flaw detection, security safety check and scientific research.In metrological application, be wherein mainly the output that some particular requirements can section be provided at X-ray production apparatus, so that the calibrated radiation source that provides calibrating and measuring to use for the radiation monitoring instrument in above-mentioned field.
In metrology application, utilize the different way of output of X-ray production apparatus to set up two kinds of different reference radiations: a kind of is the reference radiation of filter tow X ray, as shown in Figure 1; A fluorescent X-ray reference radiation, as shown in Figure 3.In Fig. 1, theelectronics 112 on thenegative electrode 113 of X-ray production apparatus moves toanode 111, sends alpha spectrum A, at exit portal place, obtains composing B, throughadditional filter 105, enters supervision ionization chamber 107.Shutter 104 is for controlling the outgoing time of ray,additional filter 105 filters for the beam to outgoing, the beam size of 106 pairs of outgoing of diaphragm is controlled,monitor 107 is for monitoring ray, the alpha spectrum C of outgoing is irradiated tostandard chamber 108, field of employment andpersonal dosimeter 109 measure, to obtain X ray Reference radiation field.Fig. 2 (a) and Fig. 2 (b) are filter tow X ray Reference radiation field principle schematic.The operation principle of X-ray production apparatus produces X ray by producing bremsstrahlung on beam bombardment plate target, the primary energy distribution profile that generally bremsstrahlung produces be one from 0 to one of X-ray production apparatus high pressure subtriangular bremsspectrum, as shown in Fig. 2 (b) spectrum A.From this spectrum, can find out that lower energy photon proportion is very large, and the transmission capacity of lower energy photon is very poor, therefore conventionally in use all to carry out suitable filtration to original spectrum, remove low energy part useless, filter tow X ray reference radiation that Here it is, it produces principle as shown in Figure 2 (a) shows.
Yet the power spectrum of filter tow X ray remains a continuous spectrum, resolution is poor.If just need other production method in the time of need to using the ray of single energy, be generally the way that adopts secondary to practice shooting, as shown in Figure 3, utilize a fluorescent target of primary beam deexcitation (radiant body) of X ray, produce characteristic X-ray Kαand Kβ, and utilize secondary filter to filter out Kβthereby, realize the object that produces single energy photon, fluorescent X-ray reference radiation that Here it is, it produces principle as shown in Fig. 4 (a) and Fig. 4 (b).Radiant body absorbs after energy, and electronics jumps to scrape and adjourns high energy excited state, from high energy excited state, transits to lower state or ground state is to produce Kα, Kβwith L at interior series of features X ray.
The pattern that the filter tow that calibration laboratory is used and fluorescence beam system adopt is conventionally the X-ray production apparatus that purchaser sells, and then according to the situation in laboratory and requirement, builds needed device.
Generally, if calibration laboratory need to be set up this two kinds of beam devices simultaneously, be all to use the different system of two covers, set up respectively filter tow device and fluorescence beam device as shown in figs. 1 and 3.The main cause that two covering devices cannot be realized on an X-ray production apparatus is if set up system by filter tow, so from outgoing, to filtering, to using, all on an axis direction, realizes.If according to fluorescence beam design system, because the energy Ratios fluorescence beam of primary ray is high, intensity is high more a lot of than fluorescence beam, therefore needs system that the axis direction of primary beam and fluorescence beam is designed to be 90 degree, can reduce to greatest extent like this interference of primary beam.Therefore general x-ray bombardment system obviously can not meet these two kinds of requirements simultaneously.
At present, also start to have the beam device of the sizing that business sells, the X80 series of X beam irradiator of U.S. Hopewell company for example, this is a kind of typical single-use filter tow X-ray irradiator.Its main formation comprises shielded enclosure, filter, ray shutter and collimater and controller and demonstration.
By above analytic explanation, if calibration laboratory wishes to set up above two cover systems simultaneously, must set up two covers and independently install, that is to say and need two cover X-ray production apparatus, different filtration systems and fluorescence produce system.Other problem is the necessary lab space of use needs due to calibration laboratory beam device, if set up the different device of two covers, just need on laboratory facility, make larger input, so its cost drops into quite large.
If can realize filter tow X-ray beam and fluorescent X-ray bundle on same X-ray production apparatus by a kind of suitable design, can save the cost of half at laboratory facility and equipment investment simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is only to use an X-ray production apparatus can realize filter tow X ray and the output of fluorescence beam X ray.
For solving the problems of the technologies described above, according to a first aspect of the invention, provide a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit, it comprises shielded enclosure, X-ray production apparatus, wherein, described shielded enclosure is provided with the first ray exit portal and the second ray exit portal; In described shielded enclosure, be provided with fluorescence generating unit, produce fluorescence beam X ray when irradiating this fluorescence generating unit at described X-ray production apparatus and penetrate from described the second ray exit portal; In described shielded enclosure, be also provided with X-ray production apparatus rotation section, be used for making described X-ray production apparatus to switch between primary importance and the second place, the X ray that described in when described primary importance, X-ray production apparatus produces penetrates from described the first ray exit portal, when the described second place described in the X ray that produces of X-ray production apparatus aim at described fluorescence generating unit.
According to a second aspect of the invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, outside at described shielded enclosure, the position corresponding with described the first ray exit portal is provided with filter tow X ray shutter, for controlling ray from the time of described the first ray exit portal outgoing; In the outside of described shielded enclosure, the position corresponding with described the second ray exit portal is provided with fluorescence beam X ray shutter, for controlling ray from the time of described the second ray exit portal outgoing.
According to a third aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, at the fast outer side of door of described filter tow X ray, have also been provided with additional filter, for the X ray of outgoing is filtered, to produce needed radiation quality.
According to a fourth aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit also comprise beam-defining jaw, for limiting from the size of the radiation beam of described the first ray exit portal or described the second ray exit portal ejaculation.
According to a fifth aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit also comprise supervision ionization chamber, for the stability to radiation beam, exercise supervision.
According to a sixth aspect of the invention, provide a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit, wherein, a pair of diaphragm aliging centered by described beam-defining jaw, described supervision ionization chamber is between described a pair of diaphragm.
According to a seventh aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit also comprise switching part, for make described beam-defining jaw with described supervision ionization chamber simultaneously along with described X-ray production apparatus is switched to the described second place and is switched to described the second corresponding position of ray exit portal from described the first corresponding position of ray exit portal from described primary importance.
According to an eighth aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are also included in the fluorescence trap arranging in described shielded enclosure, for collecting initial X-ray to reduce scattering radiation.
According to a ninth aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, described shielded enclosure is cuboid, described the first ray exit portal and described the second ray exit portal are positioned on the same sidewall of described shielded enclosure, and described switching part switches the translation between the position corresponding with described the second ray exit portal, the corresponding position of described the first ray exit portal of described beam-defining jaw and described supervision ionization chamber.
According to a tenth aspect of the present invention, a kind of filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are provided, wherein, described shielded enclosure is cylindrical, and described the first ray exit portal and described the second ray exit portal are positioned in the cylinder circle wall of described shielded enclosure; Described X-ray production apparatus is when described primary importance, the cylinder of filter tow X ray from described the first ray exit portal along described shielded enclosure radially penetrates, described X-ray production apparatus is when the described second place, and the cylinder of fluorescence beam X ray from described the second ray exit portal along described shielded enclosure radially penetrates; Described switching part switches described beam-defining jaw and the described supervision ionization chamber cylinder axial rotation along described shielded enclosure between the position corresponding with described the second ray exit portal, the corresponding position of described the first ray exit portal.
Utilize filter tow X ray provided by the present invention and fluorescence beam X ray double-purpose irradiation unit, only need an X-ray production apparatus can realize filter tow X ray and the output of fluorescence beam X ray, reduced the cost of building of filter tow X ray and fluorescence beam X-ray irradiator.
Accompanying drawing explanation
Fig. 1 is filter tow X ray reference radiation device schematic diagram in prior art;
Fig. 2 (a) and Fig. 2 (b) are filter tow X ray Reference radiation field principle schematic;
Fig. 3 is fluorescence beam X ray reference radiation device schematic diagram in prior art;
Fig. 4 (a) and Fig. 4 (b) are fluorescence beam X ray Reference radiation field principle schematic;
Fig. 5 is the schematic diagram switching between diverse location according to the X-ray machine in the filter tow X ray of an embodiment of the invention and fluorescence beam X ray double-purpose irradiation unit;
Fig. 6 (a) and Fig. 6 (b) are respectively the view while producing filter tow X ray and fluorescence beam X ray according to the filter tow X ray of an embodiment of the invention and fluorescence beam X ray double-purpose irradiation unit.
Embodiment
For making the object, technical solutions and advantages of the present invention more cheer and bright, below in conjunction with embodiment and with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these descriptions are exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, omitted the description to known configurations and technology, to avoid unnecessarily obscuring concept of the present invention.
According to an embodiment of the invention, on same X-ray production apparatus, realize the output of dual system, wherein make X-ray production apparatus meet simultaneously and be 90 degree vertical direction outputs.For this reason, first the fixture of X-ray production apparatus is designed to rotatable structure, after rotation, finally has two fixed positions, two positions are 90 degree, horizontal direction is for the output of filter tow, and vertical downward direction is for the output of fluorescent radiation, and X-ray machine rotation schematic diagram as shown in Figure 5.
The ball tube of X-ray machine of rotatable direction is the basis of realizing this technology.During this technology realizes, runing rest is only designed to two position locations of 90 degree directions, has so also reduced the problem of the location repeatability that change in location brings, the impact of the variation that has reduced to the full extent position after each adjustment on output variable.
By this design, actual generation device is that diverse location is exported respectively X ray filter tow and XRF bundle on an X-ray apparatus.
The layout of monitor ionization chamber and realization
Supervision ionization chamber is for exporting and monitor X-ray beam.Because filter tow and fluorescence beam are horizontal direction output, just upper-lower position is different, therefore adopts an inspection and guidance division, and designing supervision chamber special stand, and support adopts the mode sliding up and down to realize the conversion of position.Support, with auto-lock function, can be realized accurate location, monitors the output of beam when using different beam.Facts have proved, this structure is convenient and practical, reached Expected Results, well solved the beam monitoring difficult problem that dual system output brings, meanwhile, inspection and guidance division special stand structure has third gear self-locking position, does not affect subsequent installation and the maintenance of whole filtration system, fluorescence beam generation device, such design simplification system, reduced the cost of whole system.
Fig. 6 (a) and Fig. 6 (b) are respectively the view while producing filter tow X ray and fluorescence beam X ray according to the filter tow X ray of an embodiment of the invention and fluorescence beam X ray double-purpose irradiation unit.Wherein, filter tow X ray and fluorescence beam X ray double-purpose irradiation unit comprise:X-ray production apparatus 1, X-ray productionapparatus rotation section 2,fluorescence generating unit 3,fluorescence trap 4, filter tow shutter 5, filter tow additional filter 6, beam-definingjaw 7,fluorescence beam shutter 8,supervision ionization chamber 9, beam-defining jaw and supervision ionization chamber movable supportingframe device 10, shieldedenclosure 11.
When filtering beam X-ray and fluorescence beam X ray double-purpose irradiation unit generation filter tow X ray, during as filter tow X-ray irradiator, mainly byX-ray production apparatus 1, X-ray productionapparatus rotation section 2, filter tow shutter 5, filter tow additional filter 6, beam-definingjaw 7,supervision ionization chamber 9, beam-defining jaw and supervision ionization chamber movable supportingframe device 10, shieldedenclosure 11, formed.As shown in Figure 6 (a),X-ray production apparatus 1 is in primary importance place, X-ray from 1 through the horizontal outgoing of the first ray exit portal, restraint after filtration additional filter 6 and filter the needed radiation quality of generation, by filter tow shutter 5, realize the irradiation time of whole device is controlled, by the size of beam-definingjaw 7 restriction radiation beams, by 9 pairs of radiation beam stability of supervision ionization chamber, exercise supervision, by shieldedenclosure 11, reduce scattering radiation and prevent radiation leakage.
Utilize X-ray productionapparatus rotation section 2 thatX-ray production apparatus 1 is rotated to 90 degree, by beam-defining jaw and supervision ionization chamber movable supportingframe device 10, beam-definingjaw 7 being adjusted to the second ray exit portal withsupervision ionization chamber 9 is fluorescence beam exit position, and this device becomes fluorescent X-ray irradiation unit.As shown in Figure 6 (b), fluorescent X-ray irradiation unit is mainly comprised ofX-ray production apparatus 1, X-ray productionapparatus rotation section 2,fluorescence generating unit 3,fluorescence trap 4, beam-definingjaw 7,fluorescence beam shutter 8,supervision ionization chamber 9, beam-defining jaw and supervision ionization chamber movable supportingframe device 10, shielded enclosure 11.X-ray production apparatus 1 is switched to the second place, X-ray is outgoing vertically downward fromX-ray production apparatus 1, radiant body influorescence generating unit 3 and secondary filter produce high-purity K fluorescent X-ray, byfluorescence trap 4, collect initial X-ray to reduce scattering radiation, byfluorescence beam shutter 8, realize the irradiation time of whole device is controlled, by the size of beam-definingjaw 7 restriction radiation beams, by 9 pairs of radiation beam stability of supervision ionization chamber, exercise supervision, by shieldedenclosure 11, reduce scattering radiation and prevent radiation leakage.
Double-purpose irradiation unit in Fig. 6 (a) and Fig. 6 (b) can be realized the output of filter tow and fluorescence beam simultaneously.But structure of the present invention is not limited to the situation that above-mentioned primary importance and the second place differ 90 degree, can also be other angles, and shielded enclosure is cylindrical, the first ray exit portal and the second ray exit portal are positioned in the cylinder circle wall of shielded enclosure.X-ray production apparatus is when primary importance, and the cylinder of filter tow X ray from the first ray exit portal along shielded enclosure radially penetrates, and X-ray production apparatus is when the second place, and the cylinder of fluorescence beam X ray from the second ray exit portal along shielded enclosure radially penetrates.Switching part switches beam-defining jaw and the supervision ionization chamber cylinder axial rotation along shielded enclosure between the position corresponding with the second ray exit portal, the corresponding position of the first ray exit portal.
The serial radiant output of a plurality of filtrations of stipulating according to international standard ISO4037 in filter tow, and the radiant output of fluorescence series.The radiant output series specifically measuring is as shown in Table 1 and Table 2:
The output of table 1 filter tow
The output of table 2 fluorescence beam
Above data show, utilize this mentality of designing, can on an X-ray machine, realize the output of filter tow and fluorescence beam simultaneously, and can meet the needs of standard laboratory calibrating indicating instrument calibrating.
Should be understood that, above-mentioned embodiment of the present invention is only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore any modification of, making, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in without departing from the spirit and scope of the present invention in the situation that.In addition, claims of the present invention are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.
Claims (10)
1. filter tow X ray and a fluorescence beam X ray double-purpose irradiation unit, it comprises shielded enclosure, X-ray production apparatus, it is characterized in that:
Described shielded enclosure is provided with the first ray exit portal and the second ray exit portal;
In described shielded enclosure, be provided with fluorescence generating unit, produce fluorescence beam X ray when irradiating this fluorescence generating unit at described X-ray production apparatus and penetrate from described the second ray exit portal;
In described shielded enclosure, be also provided with X-ray production apparatus rotation section, be used for making described X-ray production apparatus to switch between primary importance and the second place, the X ray that described in when described primary importance, X-ray production apparatus produces penetrates from described the first ray exit portal, when the described second place described in the X ray that produces of X-ray production apparatus aim at described fluorescence generating unit.
2. filter tow X ray as claimed in claim 1 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
In the outside of described shielded enclosure, the position corresponding with described the first ray exit portal is provided with filter tow X ray shutter, for controlling ray from the time of described the first ray exit portal outgoing;
In the outside of described shielded enclosure, the position corresponding with described the second ray exit portal is provided with fluorescence beam X ray shutter, for controlling ray from the time of described the second ray exit portal outgoing.
3. filter tow X ray as claimed in claim 2 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
At the fast outer side of door of described filter tow X ray, be also provided with additional filter, for the X ray to outgoing, filter, to produce needed radiation quality.
4. filter tow X ray and fluorescence beam X ray double-purpose irradiation unit as claimed in claim 2 or claim 3, is characterized in that:
Described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit also comprise beam-defining jaw, for limiting from the size of the radiation beam of described the first ray exit portal or described the second ray exit portal ejaculation.
5. filter tow X ray as claimed in claim 4 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
Described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit also comprise supervision ionization chamber, for the stability to radiation beam, exercise supervision.
6. filter tow X ray as claimed in claim 5 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
The a pair of diaphragm aliging centered by described beam-defining jaw, described supervision ionization chamber is between described a pair of diaphragm.
7. filter tow X ray as claimed in claim 6 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
Described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit also comprise switching part, for make described beam-defining jaw with described supervision ionization chamber simultaneously along with described X-ray production apparatus is switched to the described second place and is switched to described the second corresponding position of ray exit portal from described the first corresponding position of ray exit portal from described primary importance.
8. filter tow X ray as claimed in claim 7 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
Described filter tow X ray and fluorescence beam X ray double-purpose irradiation unit are also included in the fluorescence trap arranging in described shielded enclosure, for collecting initial X-ray to reduce scattering radiation.
9. filter tow X ray as claimed in claim 8 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
Described shielded enclosure is cuboid, described the first ray exit portal and described the second ray exit portal are positioned on the same sidewall of described shielded enclosure, and described switching part switches the translation between the position corresponding with described the second ray exit portal, the corresponding position of described the first ray exit portal of described beam-defining jaw and described supervision ionization chamber.
10. filter tow X ray as claimed in claim 8 and fluorescence beam X ray double-purpose irradiation unit, is characterized in that:
Described shielded enclosure is cylindrical, and described the first ray exit portal and described the second ray exit portal are positioned in the cylinder circle wall of described shielded enclosure;
Described X-ray production apparatus is when described primary importance, the cylinder of filter tow X ray from described the first ray exit portal along described shielded enclosure radially penetrates, described X-ray production apparatus is when the described second place, and the cylinder of fluorescence beam X ray from described the second ray exit portal along described shielded enclosure radially penetrates;
Described switching part switches described beam-defining jaw and the described supervision ionization chamber cylinder axial rotation along described shielded enclosure between the position corresponding with described the second ray exit portal, the corresponding position of described the first ray exit portal.
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| CN201410002114.XACN103702503B (en) | 2014-01-03 | 2014-01-03 | Dual-purposed irradiation device for filtering beam X rays and fluorescent X rays |
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| CN201410002114.XACN103702503B (en) | 2014-01-03 | 2014-01-03 | Dual-purposed irradiation device for filtering beam X rays and fluorescent X rays |
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Cited By (4)
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| CN106376165A (en)* | 2016-09-22 | 2017-02-01 | 中国原子能科学研究院 | A portable X-ray irradiation device for on-site calibration |
| CN106658930A (en)* | 2017-01-23 | 2017-05-10 | 中国工程物理研究院激光聚变研究中心 | Adjustable X-ray source |
| CN109471155A (en)* | 2018-12-26 | 2019-03-15 | 中国原子能科学研究院 | A pulsed X-ray irradiation device for active ionizing radiation dosimeter testing |
| CN112074067A (en)* | 2020-08-05 | 2020-12-11 | 中国原子能科学研究院 | A portable X-ray irradiation device for field calibration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106376165A (en)* | 2016-09-22 | 2017-02-01 | 中国原子能科学研究院 | A portable X-ray irradiation device for on-site calibration |
| CN106658930A (en)* | 2017-01-23 | 2017-05-10 | 中国工程物理研究院激光聚变研究中心 | Adjustable X-ray source |
| CN109471155A (en)* | 2018-12-26 | 2019-03-15 | 中国原子能科学研究院 | A pulsed X-ray irradiation device for active ionizing radiation dosimeter testing |
| CN109471155B (en)* | 2018-12-26 | 2024-07-19 | 中国原子能科学研究院 | Pulse X-ray irradiation device for active ionizing radiation dosimeter test |
| CN112074067A (en)* | 2020-08-05 | 2020-12-11 | 中国原子能科学研究院 | A portable X-ray irradiation device for field calibration |
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| CN103702503B (en) | 2017-01-11 |
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