CN108013891A - A kind of radiographic apparatus - Google Patents
A kind of radiographic apparatus Download PDFInfo
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- CN108013891A CN108013891A CN201810075267.5A CN201810075267A CN108013891A CN 108013891 A CN108013891 A CN 108013891A CN 201810075267 A CN201810075267 A CN 201810075267A CN 108013891 A CN108013891 A CN 108013891A
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- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 238000003384 imaging method Methods 0.000 claims abstract description 20
- 238000001228 spectrum Methods 0.000 claims abstract description 16
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 238000010894 electron beam technology Methods 0.000 claims description 20
- 230000003993 interaction Effects 0.000 claims description 6
- 238000009738 saturating Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 239000013307 optical fiber Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000010429 evolutionary process Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000002123 temporal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
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- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
The invention discloses a kind of radiographic apparatus.The device includes crystal, imaging device and X-ray streak camera.X-ray streak camera includes scan converter, optical taper and image recording structure.The X-ray that target is sent is by the photocathode slit I of crystalline dispersion to scan converter, it is imaged onto at the same time by imaging device on photocathode slit II, after X-ray transparent slit launching electronics are acted on photocathode, bombardment fluorescent screen sends visible images after electronics passes through each electrode of scan converter and is subject to the focal imaging of electrode, scan deflection effect, it is seen that light image is recorded after optical taper transmits by image recording structure.By the image of record can obtain at the same time X-ray space and spectrum information with the time evolutionary process.The radiographic apparatus of the present invention is compact-sized, and dynamic range is big, can obtain time, space and spectrum information evolutionary process at the same time, has broad prospect of application.
Description
Technical field
The invention belongs to photodetection field, and in particular to a kind of radiographic apparatus.
Background technology
In laser-produced fusion Physical Experiment research, the space for the X-ray that plasma is launched and the time of power spectrum drill
It is highly important research contents that change process, which carries out accurate diagnosis,.But traditional diagnostic device, as Guo Luting, Wei Min are practised, recklessly
Sunrise etc. was the 28th phase in 2016《Light laser and the particle beams》On deliver《High performance streaked X-ray
spectrometer for research of laser-produced plasmas》, it is only capable of individually providing X-ray space
Temporal evolution process or the temporal evolution process for individually providing power spectrum.Obtain the space of X-ray and the temporal evolution of power spectrum
Process, it is necessary to diagnosed from different directions to the X-ray that gas ions are launched by more set diagnostic devices, such mode
It is big to take target chamber space, and the association in time between various diagnostic devices there are large error, seriously affect Physical Experiment
Accuracy.Currently there is an urgent need for a kind of radiographic apparatus that can obtain space and spectral information Temporal Evolution process at the same time.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of radiographic apparatus.
The radiographic apparatus of the present invention includes crystal, imaging device and X-ray streak camera；The crystal, imaging
Device is installed on the front of X-ray streak camera；X-ray streak camera include along the z-axis direction tactic scan converter,
Optical taper and image recording structure；
The scan converter includes tactic photocathode slit plate, photocathode, plate electrode I, tablet along the z-axis direction
Electrode II, plate electrode III, electric quadrupole lens focus group, plate electrode IV, plate electrode V, plate electrode VI, deflecting plates and
Fluorescent screen；
There are tactic photocathode slit I and photocathode slit II along the x-axis direction on the photocathode slit plate；
There is slit I along the x-axis direction at the center of the plate electrode I；
The electric quadrupole lens focus group includes tactic electric quadrupole lens I and electric quadrupole lens II along the x-axis direction；
VI centre bit of plate electrode is equipped with tactic slit II along the x-axis direction and slit III；
When device works, after crystal diffraction, the spectrum signal that X-ray includes is irradiated to the X-ray that target is sent along X-direction
On photocathode slit plate, spectrum signal launches electron beam I through after photocathode slit I with photocathode interaction；The X that target is sent
Ray is also imaged onto on photocathode slit plate by imaging device at the same time, radioscopic image through after photocathode slit II also with light
Cathode interaction launching electronics beam II；Electron beam I enters plate electrode I by slit I, and sequentially passes through plate electrode II, puts down
Reached after plate electrode III, electric quadrupole lens I, plate electrode IV, plate electrode V, plate electrode VI, slit II and deflecting plates glimmering
Optical screen simultaneously bombards fluorescent screen and sends visible images, it is seen that light image enters image recording structure after being transmitted by optical taper；Electronics
Beam II also at the same time by slit I enter plate electrode I, and sequentially pass through plate electrode II, plate electrode III, electric quadrupole lens II,
Reached after plate electrode IV, plate electrode V, plate electrode VI, slit III and deflecting plates fluorescent screen and bombard that fluorescent screen sends can
See light image, it is seen that light image enters image recording structure after also being transmitted by optical taper.
The imaging device is pin hole.
The optical taper is contracting as type optical taper.
The image recording structure is CCD.
The photocathode slit I is overlapped with the center line of electric quadrupole lens I, photocathode slit II and electric quadrupole lens II
Center line overlap.
The slit II is overlapped with the center line of photocathode slit I, the center line weight of slit III and photocathode slit II
Close.
The radiographic apparatus of the present invention is compact-sized, and dynamic range is big, can obtain time, space and spectrum letter at the same time
Evolutionary process is ceased, there is broad prospect of application.
Brief description of the drawings
Fig. 1 is the structure diagram of the radiographic apparatus of the present invention；
Fig. 2 is the structure diagram of the scan converter of the radiographic apparatus of the present invention；
Fig. 3 is the structure diagram of the electric quadrupole lens focus group of the scan converter of the radiographic apparatus of the present invention；
In figure, 1. target, 2. crystal, 3. 6. optical taper of imaging device 4.X rays 5. scan converter of streak camera, 7. image
I 11. plate electrode of tape deck 8. photocathode slit plate, 9. photocathode, 10. plate electrode, II 12. plate electrode III 13.
VI 17. deflecting plates of electric quadrupole lens focus group 14. plate electrode, IV 15. plate electrode, V 16. plate electrode, 18. fluorescence
Shield 19. photocathode slit, I 20. photocathode slit, II 21. slit, I 22. slit, II 23. slit, III 24. electric quadrupole lens I
25. II 26. electron beam of electric quadrupole lens, I 27. electron beam II.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 1 ~ 3, radiographic apparatus of the invention includes crystal 2, imaging device 3 and X-ray streak camera 4；
The crystal 2, imaging device 3 are installed on the front of X-ray streak camera 4；X-ray streak camera 4 includes suitable along the z-axis direction
Scan converter 5, optical taper 6 and the image recording structure 7 of sequence arrangement；
The scan converter 5 includes tactic photocathode slit plate 8, photocathode 9, plate electrode I along the z-axis direction
10th, plate electrode II 11, plate electrode III 12, electric quadrupole lens focus group 13, plate electrode IV 14, plate electrode V 15, flat
Plate electrode VI 16, deflecting plates 17 and fluorescent screen 18；
There are tactic photocathode slit I 19 and photocathode slit II 20 along the x-axis direction on the photocathode slit plate 8；
There is slit I 21 along the x-axis direction at the center of the plate electrode I 10；
The electric quadrupole lens focus group 13 includes tactic electric quadrupole lens I 24 and electric quadrupole lens along the x-axis direction
Ⅱ25；
VI 16 centre bit of plate electrode is equipped with tactic slit II 22 along the x-axis direction and slit III 23；
When device works, after 2 diffraction of crystal, the spectrum signal that X-ray includes irradiates the X-ray that target 1 is sent along X-direction
Onto photocathode slit plate 8, spectrum signal launches electron beam I 26 through after photocathode slit I 19 with the interaction of photocathode 9；
The X-ray that target 1 is sent also while is imaged onto on photocathode slit plate 8 by imaging device 3, and radioscopic image is narrow through photocathode
Also interact launching electronics beam II 27 after stitching II 20 with photocathode 9；Electron beam I 26 enters plate electrode I 10 by slit I 21,
And sequentially pass through plate electrode II 11, plate electrode III 12, electric quadrupole lens I 24, plate electrode IV 14, plate electrode V 15,
Fluorescent screen 18 is reached after plate electrode VI 16, slit II 22 and deflecting plates 17 and bombards fluorescent screen 18 and sends visible images, can
See that light image enters image recording structure 7 after being transmitted by optical taper 6；Electron beam II 27 also enters plate electrode I by slit I 21
10, and sequentially pass through plate electrode II 11, plate electrode III 12, electric quadrupole lens II 25, plate electrode IV 14, plate electrode V
15th, fluorescent screen 18 is reached after plate electrode VI 16, slit III 23 and deflecting plates 17 and bombards fluorescent screen 18 and sends visible images,
Visible images enter image recording structure 7 after also being transmitted by optical taper 6.
The imaging device 3 is pin hole.
The optical taper 6 is contracting as type optical taper.
The image recording structure 7 is CCD.
The photocathode slit I 19 is overlapped with the center line of electric quadrupole lens I 24, photocathode slit II 20 and electric quadrupole
The center line of lens II 25 overlaps.
The slit II 22 is overlapped with the center line of photocathode slit I 19, slit III 23 and photocathode slit II 20
Center line overlaps.
Embodiment 1
Device work when, the photocathode, plate electrode I, plate electrode II, plate electrode III, electric quadrupole lens focus group,
Plate electrode IV, plate electrode V, plate electrode VI and deflecting plates are applied with corresponding operating voltage.
For the X-ray that target 1 is sent after 2 diffraction of crystal, the spectrum signal that X-ray includes is irradiated to time along the x-axis direction
On pole slit plate 8, spectrum signal launches electron beam I 26 through after photocathode slit I 19 with the interaction of photocathode 9.Due to light
Plate electrode I 10 is entered by slit I 21 after effect has negative high voltage, electron beam I 26 to be accelerated on cathode 9, and is passed sequentially through flat
Plate electrode II 11, plate electrode III 12, electric quadrupole lens I 24, plate electrode IV 14, plate electrode V 15 and plate electrode VI
16, then pass through slit I 21 and enter deflecting plates 17, be subject to the scan deflection of deflecting plates 17 to obtain time resolution after acting on, and bang
Hit fluorescent screen 18 and send visible ray.Plate electrode I 10, plate electrode II 11, the composition electronics prefocus of plate electrode III 12 are saturating
Mirror focuses on electronics in the y-axis direction, and electronics can be made to keep smaller divergence in the y-axis direction during the motion.Plate electrode
IV 14, plate electrode V 15, plate electrode VI 16 form the main convergent lens of electronics and further focus on electronics in the y-axis direction, make
Electron beam enters deflecting plates 17 with the width of very little, can so obtain high time resolution.Since electric quadrupole lens I 24 are in x-axis
Electronics is acted on focal imaging on direction, so electron beam I 26 can still keep x-axis direction after reaching fluorescent screen 18
Spectrum information.
The X-ray that target 1 is sent also while is imaged onto on photocathode slit plate 8 by imaging device 3, and image passes through photocathode
Also interact concurrent radio beamlet II 27 after slit I 20 with photocathode 9.Electronics II 27 after each electrode also through reaching fluorescent screen
18, and it is subject to the mechanism identical with electron beam I 26 in the process.It is saturating by electric quadrupole to be a difference in that electron beam II 27
With reaching fluorescent screen 18 after slit II 22, the focal imaging for being subject to electric quadrupole lens II 25 in X-direction acts on mirror II 25.Electronics
Beam II 27 by comprising X-ray X-direction spatial information, by the way that space can be obtained after the effect of the scan deflection of deflecting plates 17
Information changes with time process.When the imaging device 3 used is pin hole, the making of realization device can be facilitated.
Finally, the visible images that electron beam I 26 is sent with the bombardment fluorescent screen 18 of electron beam II 27 pass through the biography of optical taper 6
Recorded after defeated by image recording structure 7.The image recorded according to image recording structure 7 can obtain the X-ray that target 1 is sent at the same time
Space pattern in the direction of the x axis changes with time the process that the spectrum information that process and X-ray include changes over time.Due to
The visible images that fluorescent screen 18 is sent are larger, so optical taper 6 is to contract as type optical taper, contracting picture is carried out when transmitting image,
Image can be made only to need separate unit image recording structure 7 to complete the record to image.And CCD is used as image recording structure 7
When, operation processing easily can be carried out to image.
At the same time as it can be seen that scan converter 4 is distinguished using plate electrode group and electric quadrupole lens in x-axis direction and y-axis direction
Electronics is focused on, the space crossed point of electronics is inconsistent in both direction, can so reduce charge density, lifts dynamic range, and
And electron beam I 26 and electron beam II 27 are separate, there is no influencing each other, can further lifting device dynamic range.
The present invention is not limited to above-mentioned embodiment, person of ordinary skill in the field from above-mentioned design,
Without creative work, made a variety of conversion, are within the scope of the present invention.
Claims (6)
- A kind of 1. radiographic apparatus, it is characterised in that：The device includes crystal (2), imaging device (3) and X-ray bar Line camera (4)；The crystal (2), imaging device (3) are installed on the front of X-ray streak camera (4)；X-ray streak camera (4) tactic scan converter (5), optical taper (6) and image recording structure (7) along the z-axis direction are included；The scan converter (5) includes tactic photocathode slit plate (8), photocathode (9), tablet along the z-axis direction Electrode I (10), plate electrode II (11), plate electrode III (12), electric quadrupole lens focus group (13), plate electrode IV (14), Plate electrode V (15), plate electrode VI (16), deflecting plates (17) and fluorescent screen (18)；There are tactic photocathode slit I (19) and photocathode slit II along the x-axis direction on the photocathode slit plate (8) (20)；There is slit I (21) along the x-axis direction at the center of the plate electrode I (10)；The electric quadrupole lens focus group (13) includes tactic electric quadrupole lens I (24) and electric quadrupole along the x-axis direction Lens II (25)；Described plate electrode VI (16) centre bit is equipped with tactic slit II (22) along the x-axis direction and slit III (23)；When device works, the X-ray that target (1) is sent is after crystal (2) diffraction, and spectrum signal that X-ray includes is along X-direction It is irradiated on photocathode slit plate (8), spectrum signal is launched with photocathode (9) interaction afterwards through photocathode slit I (19) Electron beam I (26)；The X-ray that target (1) is sent also while is imaged onto on photocathode slit plate (8) by imaging device (3), and X is penetrated Line image pass through photocathode slit II (20) after also with photocathode (9) interaction launching electronics beam II (27)；Electron beam I (26) Plate electrode I (10) is entered by slit I (21), and it is saturating to sequentially pass through plate electrode II (11), plate electrode III (12), electric quadrupole After mirror I (24), plate electrode IV (14), plate electrode V (15), plate electrode VI (16), slit II (22) and deflecting plates (17) Reach fluorescent screen (18) and bombard fluorescent screen (18) and send visible images, it is seen that light image enters after being transmitted by optical taper (6) Image recording structure (7)；Electron beam II (27) also enters plate electrode I (10) by slit I (21) at the same time, and sequentially passes through tablet Electrode II (11), plate electrode III (12), electric quadrupole lens II (25), plate electrode IV (14), plate electrode V (15), tablet Electrode VI (16), slit III (23) and deflecting plates (17) reach fluorescent screen (18) and bombard fluorescent screen (18) afterwards sends visible ray figure Picture, it is seen that light image enters image recording structure (7) after also being transmitted by optical taper (6).
- 2. radiographic apparatus according to claim 1, it is characterised in that the imaging device (3) is pin hole.
- 3. radiographic apparatus according to claim 1, it is characterised in that the optical taper (6) is contracting as type optical fiber Cone.
- 4. radiographic apparatus according to claim 1, it is characterised in that the image recording structure (7) is CCD.
- 5. radiographic apparatus according to claim 1, it is characterised in that the photocathode slit I (19) and electricity four The center line of pole lens I (24) overlaps, and photocathode slit II (20) is overlapped with the center line of electric quadrupole lens II (25).
- 6. radiographic apparatus according to claim 1, it is characterised in that the slit II (22) and photocathode is narrow The center line for stitching I (19) overlaps, and slit III (23) is overlapped with the center line of photocathode slit II (20).
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| CN201810075267.5A CN108013891B (en) | 2018-01-26 | 2018-01-26 | X-ray diagnostic device |
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| CN201810075267.5A CN108013891B (en) | 2018-01-26 | 2018-01-26 | X-ray diagnostic device |
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| CN108013891B CN108013891B (en) | 2023-08-04 |
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Cited By (4)
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| CN109459779A (en) * | 2019-01-08 | 2019-03-12 | 中国工程物理研究院激光聚变研究中心 | A kind of laser implosion diagnostic system |
| CN109975858A (en) * | 2019-05-06 | 2019-07-05 | 中国工程物理研究院激光聚变研究中心 | A kind of imaging photoelectron beam sweep type time domain gating photoelectric detecting system |
| CN111323440A (en) * | 2020-04-09 | 2020-06-23 | 中国工程物理研究院激光聚变研究中心 | X-ray diffraction diagnostic system |
| CN111426705A (en) * | 2020-03-30 | 2020-07-17 | 中国工程物理研究院激光聚变研究中心 | Synoptophore scanning framing diagnostic device |
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| CN109459779A (en) * | 2019-01-08 | 2019-03-12 | 中国工程物理研究院激光聚变研究中心 | A kind of laser implosion diagnostic system |
| CN109459779B (en) * | 2019-01-08 | 2023-08-18 | 中国工程物理研究院激光聚变研究中心 | Laser implosion diagnosis system |
| CN109975858A (en) * | 2019-05-06 | 2019-07-05 | 中国工程物理研究院激光聚变研究中心 | A kind of imaging photoelectron beam sweep type time domain gating photoelectric detecting system |
| CN109975858B (en) * | 2019-05-06 | 2023-10-31 | 中国工程物理研究院激光聚变研究中心 | Imaging photoelectron beam scanning type time-domain gating photoelectric detection system |
| CN111426705A (en) * | 2020-03-30 | 2020-07-17 | 中国工程物理研究院激光聚变研究中心 | Synoptophore scanning framing diagnostic device |
| CN111323440A (en) * | 2020-04-09 | 2020-06-23 | 中国工程物理研究院激光聚变研究中心 | X-ray diffraction diagnostic system |
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