Experimental observation and theoretical analysis of detonation wave evolution induced by laser ablating aluminum target

Wang Fei; Chen Lang; Wu Junying; Sun Cuiyuan

Volume 25 Issue 04

Mar. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(04): 807-812

sheng jia-tian, mou wen-yong, li yun-sheng, et al. Influence of non-LTE radiation ablation on imploding neutron yield[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

Wang Fei, Chen Lang, Wu Junying, et al. Experimental observation and theoretical analysis of detonation wave evolution induced by laser ablating aluminum target[J]. High Power Laser and Particle Beams, 2013, 25: 807-812.

sheng jia-tian, mou wen-yong, li yun-sheng, et al. Influence of non-LTE radiation ablation on imploding neutron yield[J]. High Power Laser and Particle Beams, 2005, 17.

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Experimental observation and theoretical analysis of detonation wave evolution induced by laser ablating aluminum target

1.
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China

Received Date: 2012-09-02
Rev Recd Date: 2012-10-10
Publish Date: 2013-03-09

Abstract

Abstract

A experiment of laser ablating aluminum target was conducted. A schlieren photography technique was employed for visualizing temporal evolution of detonation waves and analyzing detonation wave attenuation law. Based on similitude theory of shockwave motion, a point explosion model was used to describe detonation-wave evolution induced by laser ablating aluminum target. The propagation speed, pressure and temperature of the wave front were calculated. The results show that the detonation wave has a high speed towards laser source. The wave front transform from half-elliptical in early evolution stage into half-spherical. The disturbed zone has a complicated structure and multi-density discontinuities during the flow-field evolution. In the initial stage of detonation-wave propagation, the shockwave has a high pressure and temperature, but they decrease rapidly.
- detonation wave,
- schlieren photography technique,
- point explosion,
- flow field evolution

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