Free-surface velocity measurements using an optically recording velocity interferometer

lu jian-xin; wang zhao; liang jing; shan yu-sheng; zhou chuang-zhi; xiang yi-huai; lu ze; tang xiu-zhang

Volume 18 Issue 05

May 2006

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Article Navigation > High Power Laser and Particle Beams > 2006 > 18(05): 0-

zhang zi-cheng, yang han-wu, zhang jian-de, et al. Experimental studies on repetitive pulsed power modulator with compact Tesla transformer[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

lu jian-xin, wang zhao, liang jing, et al. Free-surface velocity measurements using an optically recording velocity interferometer[J]. High Power Laser and Particle Beams, 2006, 18.

zhang zi-cheng, yang han-wu, zhang jian-de, et al. Experimental studies on repetitive pulsed power modulator with compact Tesla transformer[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

lu jian-xin, wang zhao, liang jing, et al. Free-surface velocity measurements using an optically recording velocity interferometer[J]. High Power Laser and Particle Beams, 2006, 18.

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Free-surface velocity measurements using an optically recording velocity interferometer

1.
China Institute of Atomic Energy,P.O.Box 275-7,Beijing 102413,China

Publish Date: 2006-05-15

Abstract

Abstract

An optically recording velocity interferometer system(ORVIS) was developed for the free-surface velocity measurements in the equation of state experiments. The time history of free-surface velocity could be recorded by the electronic streak camera. In the experiments, ORVIS got a 179 ps time resolution, and a higher time resolution could be got by minimizing the delay time. The equation of state experiments were carried out on the high power excimer laser system called “Heaven Ⅰ” with laser wavelength of 248.4 nm, pulse duation of 25 ns and maximum energy 158 J. Free-surface velocity of 20 μm thick iron got 3.86 km/s with laser intensity of 6.24×1011W·cm-2, and free-surface velocity of 100 μm thick aluminum with 100 μm CH foil at the front got 2.87 km/s with laser intersity 7.28 ×
- optically recording velocity interferometer,
- equation of state,
- free-surface velocity,
- streak camera,
- shockwave

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