中国激光, 1998, 25 (8): 743, 网络出版: 2006-10-18
强激光驱动高压冲击波特性研究
Study of the Properties of the Shock Wave Induced by High-power Laser
激光冲击波 PVDF压电传感器 传播速度 衰减系数 laser-induced shock wave PVDF piezoelectricity gauge propagation velocity attenuation coefficient
摘要
利用响应快、测压范围宽的新型绝缘膜组合式高聚物压电传感器(PVDF压电传感器)以及PIN硅光二极管和PHILIPS PM3320A型示波器,实现了对激光引发的冲击波压力的实时测量。得到了激光冲击波在铝靶中的平均传播速度为6.38×10 3 m/s,与通常的声波纵波在铝中的传播速度(6400 m/s)很相近。激光引发的冲击波峰值压力在铝中的衰减规律是指数型的。
Abstract
Using a new piezoelectricity gauge of insulation film and combined-high-polymer of a short rise time and wide linear response range, together with a PIN optoelectric tube and PHILIPS PM 3320A oscilloscope, the real-time measurement of pressure of the laser-induced shock wave is realized. Based on this technology, the propagation velocity and attenuation coefficient of the laser-induced shock wave in aluminum are obtained. The average propagation velocity of the laser-induced shock wave in aluminum is 6.38×10 3m/s. The attenuation of peak pressure of the laser-induced shock wave in Al is an exponential function: P(x)=0.48exp(-0.14x).
洪昕, 王声波, 郭大浩, 吴鸿兴, 虞吉林. 强激光驱动高压冲击波特性研究[J]. 中国激光, 1998, 25(8): 743. 洪昕, 王声波, 郭大浩, 吴鸿兴, 虞吉林. Study of the Properties of the Shock Wave Induced by High-power Laser[J]. Chinese Journal of Lasers, 1998, 25(8): 743.
PDF全文
