CN201212891Y - Speed measuring device lateral shadow photo taking used in state equation experiment - Google Patents
Speed measuring device lateral shadow photo taking used in state equation experiment Download PDFInfo
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- CN201212891Y CN201212891Y CNU2008200052839U CN200820005283U CN201212891Y CN 201212891 Y CN201212891 Y CN 201212891Y CN U2008200052839 U CNU2008200052839 U CN U2008200052839U CN 200820005283 U CN200820005283 U CN 200820005283U CN 201212891 Y CN201212891 Y CN 201212891Y
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- 238000002474 experimental method Methods 0.000 title claims abstract description 13
- 230000009187 flying Effects 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 10
- 238000003384 imaging method Methods 0.000 abstract description 6
- 239000000523 sample Substances 0.000 abstract description 6
- 229910052786 argon Inorganic materials 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 238000011160 research Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 230000001568 sexual effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model provides a side shadowgraph speed measuring device used in a state equation experiment, which comprises probe light, a mechanical shutter, a Pockers cell, a reflector, a target chamber, a flyer plate, KrF laser, an internal focusing telescope, a lens, a streak camera, a diaphragm a, a diaphragm b and a plano-convex cylindrical mirror, wherein the diaphragm a vertically passes through the probe light and is arranged at the front end of the flyer plate, the diaphragm b vertically passes through the probe light and is arranged in the target chamber at the rear end of the flyer plate, one plane face of the plano-convex cylindrical mirror faces to the probe light and is vertical to the probe light, and the center of one convex face of the plano-convex cylindrical mirror aims at the side of the flyer plate. The device can better avoid the defect of low signal-to-noise ratio of fluorescence generated after argon laser and the KrF laser strike the flyer plate, can better eliminate the interference of the KrF laser to an imaging system, and increases the definition and the accuracy of photographing.
Description
Technical field
The utility model relates to side direction shadowgraph technology, is specifically related to be used for the side direction shadowgraph speed measuring device of state equation experiment.
Background technology
The experiment measuring of state equation is subjected to extensive attention in fields such as geophysics, astrophysics, inertial confinement fusion, material science, nuclear weapon physics, and is all significant to the development of practical application and state equation theory.The research of high pressure state equation is producing considerable influence and is being subjected to extensive attention at numerous areas.By the Yu Gongniu equation, can know that shock velocity and particle rapidity are to need two measured amounts in the state equation experiment, wherein particle rapidity can obtain indirectly by the speed of measuring film flying in film flying bump method.So in the experiment of research state equation, accurately surveying flyer velocity is a job highly significant.
The shadowgraph technology is that a kind of object that utilizes blocks the image outline that light source manifests on screen, obtains the technology of object and ambient condition information thereof.It can be used to take the high-speed flight target, obtains the movable information of airbound target and environment.
In the prior art, about the application of shadowgraph technology in state equation, " application of side direction shadowgraph technology in the state equation experiment " (China Atomic Energy Science Research Institute's annual report, 2006, author: invigorating, Tang Xiuzhang, Wang Zhao, Lu Jianxin is Liang Jing) in the literary composition, disclose the side direction photographic system of setting up as probe source cooperation internal focusing telescope with argon laser, be used to carry out the measurement of flyer velocity.Also disclose to avoiding the flyback problem of streak camera, mechanical shutter adds Pockers cell and is applied in the light path.Though, point out in this article that under the help of positive and side internal focusing telescope, light path can accurately be adjusted.But the light path system that provides in application this article is measured also existing problems.Because the fluorescence that produces behind argon laser and the KrF laser light strikes film flying, both signal to noise ratio (S/N ratio)s are not high, can not get rid of the interference for imaging system of the fluorescence that produces behind the KrF laser light strikes film flying well, influenced the sharpness and the accuracy of taking pictures.
The utility model content
The utility model provides a kind of side direction shadowgraph speed measuring device that is used for the state equation experiment.This device can have been avoided the not high defective of fluorescence signal to noise ratio (S/N ratio) that produces behind argon laser and the KrF laser light strikes film flying well, can get rid of the interference of KrF laser for imaging system well, has strengthened the sharpness and the accuracy of taking pictures.
The side direction shadowgraph speed measuring device that is used for the state equation experiment that this practical sexual type provided, comprise and survey light 3, mechanical shutter 1, Pockers cell 2, catoptron 4, rake chamber 6, film flying 8, KrF laser 10, internal focusing telescope a11, internal focusing telescope b12, lens 13, streak camera 15, wherein, mechanical shutter 1 and Pockers cell 2 are placed on the light path of surveying light 3, after surveying 4 reflections of light 3 process catoptrons, parallel with the film flying 8 in the rake chamber 6, internal focusing telescope a11 and internal focusing telescope b12 are used to regulate detection light 3 and the depth of parallelism of film flying 8 and the degree of focus of KrF laser 10 and film flying 8, image in the slit of streak camera 15 by catoptron 4 and the movement locus of lens 13 film flying 8, this speed measuring device also comprises diaphragm a5, diaphragm b9, plano-convex cylindrical mirror 7, interference filter element and attenuator 14, diaphragm a5 vertically passes and surveys light 3, place film flying 8 front ends, diaphragm b9 vertically passes and surveys light 3, place in the rake chamber 6 of film flying 8 rear ends, the flat one side of plano-convex cylindrical mirror 7 is towards surveying light 3, and perpendicular to surveying light 3, the side of the centrally aligned film flying 8 that plano-convex cylindrical mirror 7 is protruding, interference filter element and attenuator 14 place between lens 4 and the streak camera 15, and more close streak camera 15.
The side direction shadowgraph speed measuring device that is used for the state equation experiment that this practical sexual type provided, the characteristic that the plano-convex cylindrical mirror of settling has utilized streak camera only to survey on one-dimensional space direction, make survey light the film flying center position be focused into the streak camera camera lens on the corresponding fine rule of slit, so the energy of the exploring laser light that makes full use of, thereby improved signal to noise ratio (S/N ratio).Before and after film flying, respectively settle a diaphragm, utilize the aperture at diaphragm center to play the effect that to survey optical alignment, the use of an internal focusing telescope has been provided compared with the light path system that provides in the prior art, because internal focusing telescope in actual use, few more easy more focusing, cooperate two internal focusing telescopes to regulate with two diaphragms, improved the depth of parallelism of surveying light and film flying.
Description of drawings
Fig. 1 side direction shadowgraph speed measuring device synoptic diagram
1 mechanical shutter, 2 Pockers cells, 3 survey light, 4 catoptrons, 5 diaphragm a, rake chambers 6,7 plano-convex cylindrical mirrors, 8 film flyings, 9 diaphragm b, 10KrF laser, 11 internal focusing telescope a, 12 internal focusing telescope b, 13 lens, 14 interference filter elements and attenuator, 15 streak cameras.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment 1:
Pass through mechanical shutters 1 with argon laser as surveying light 3, Pockers cell 2, diaphragm a5 is focused on film flying 8 centers by plano-convex cylindrical mirror 7 (focal length is 15.00cm).Pass through diaphragm b9 again, be formed on streak camera 15 slits by the picture of imaging system with film flying 8 centers.Imaging system comprises visible light interference filter element and attenuator 14, and according to needed enlargement factor, the focal length that lens 13 are selected respectively is the simple lens of 37.00cm, or focal length is the compound lens group of 37.00cm and 15.00cm.
The centre wavelength of surveying the continuous output of light 3 employings is the laser of 514.5nm.Its Maximum Power Output is about 0.5W.Because the fluorescence that produces behind the KrF laser 10 bump film flyings is through after the blocking of diaphragm b9, visible light interference filter element and attenuator 14, near its intensity the 514.5nm place is still greater than detection light 3.In order to improve signal to noise ratio (S/N ratio), need to improve the power of surveying light 3, so with a slice focal length is that the plano-convex cylindrical mirror 7 of 15.00cm is added in the light path, make detection light 3 be focused into a line in film flying 8 positions, again with this line imaging on the slit of streak camera 15, like this can be successfully on streak camera, obtain the picture rich in detail of film flying flight path.
Claims (2)
1. the side direction shadowgraph speed measuring device that is used for the state equation experiment, comprise and survey light (3), mechanical shutter (1), Pockers cell (2), catoptron (4), rake chamber (6), film flying (8), KrF laser (10), internal focusing telescope a (11), internal focusing telescope b (12), lens (13), streak camera (15), wherein, mechanical shutter (1) and Pockers cell (2) are placed on the light path of surveying light (3), after surveying light (3) process catoptron (4) reflection, parallel with the film flying (8) in the rake chamber (6), internal focusing telescope a (11) and internal focusing telescope b (12) are used for regulating detection light (3) and the depth of parallelism of film flying (8) and the degree of focus of KrF laser (10) and film flying (8), image in the slit of streak camera (15) by catoptron (4) and the movement locus of lens (13) film flying (8), it is characterized in that, this speed measuring device also comprises diaphragm a (5), diaphragm b (9), plano-convex cylindrical mirror (7), diaphragm a (5) vertically passes and surveys light (3), place film flying (8) front end, diaphragm b (9) vertically passes and surveys light (3), place in the rake chamber (6) of film flying (8) rear end, the flat one side of plano-convex cylindrical mirror (7) is towards surveying light (3), and perpendicular to surveying light (3), the side of the centrally aligned film flying (8) that plano-convex cylindrical mirror (7) is protruding.
2. the side direction shadowgraph speed measuring device that is used for the state equation experiment according to claim 1 is characterized in that this speed measuring device also comprises interference filter element and attenuator (14), places between lens (4) and the streak camera (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200052839U CN201212891Y (en) | 2008-04-14 | 2008-04-14 | Speed measuring device lateral shadow photo taking used in state equation experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200052839U CN201212891Y (en) | 2008-04-14 | 2008-04-14 | Speed measuring device lateral shadow photo taking used in state equation experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212891Y true CN201212891Y (en) | 2009-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200052839U Expired - Lifetime CN201212891Y (en) | 2008-04-14 | 2008-04-14 | Speed measuring device lateral shadow photo taking used in state equation experiment |
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| Country | Link |
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| CN (1) | CN201212891Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873595A (en) * | 2018-09-12 | 2018-11-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light and shadowgraph imaging device before hypervelocity flight model |
-
2008
- 2008-04-14 CN CNU2008200052839U patent/CN201212891Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873595A (en) * | 2018-09-12 | 2018-11-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light and shadowgraph imaging device before hypervelocity flight model |
| CN108873595B (en) * | 2018-09-12 | 2023-10-31 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultra-high speed flight model front light and shadow imaging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090325 |