液体中激光等离子体冲击波波前传播特性研究及测试  

The investigation of laser-induced plasma shock wave propagation in liquids

作　　者：卞保民[1] 陈笑[1] 夏铭[1] 杨玲[1] 沈中华[1] 

机构地区：[1]南京理工大学应用物理系,南京210094

出　　处：《物理学报》2004年第2期508-513,共6页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :60 3 780 0 3 )资助的课题~~

摘　　要：将空气中球对称冲击波衰减波前传播公式推广到非完全中心对称情况 ,根据对光学阴影法对激光等离子体冲击波波前测试数据的计算分析 ,提出液体中点源激光等离子体冲击波旋转椭球面波前传播公式 .并且用声学方法对水中和酒精中的激光等离子体冲击波波前进行实验测试 。Extending the propagation formula of the attenuated laser-induced plasma shock wave front with spherical symmestry in the air to the non-absolute centric symmetry is described in this paper. According to the analysis of the measured data for the laser-induced plasma shock wave front by using photo shadowgraph, a propagation formula of a rotational ellipsoid shock wave for a point source in the laser-induced plasma in a liquid is presented in this paper. The shock wave attenuation in pure water and ethanol has been investigated by means of the acoustic method. The experimental data are in agreement with the calculated results.

关 键 词：激光 等离子体冲击波 液体 旋转椭球面 波前传播特性 

分 类 号：O531[理学—等离子体物理]