液体中光击穿所激发声场的方向性  

The research of directivity of the sound field through mechanism of laser-induced liquid breakdown

作　　者：曹辉[1] 尚志远[1] 

机构地区：[1]陕西师范大学应用声学研究所,陕西西安710062

出　　处：《西北大学学报（自然科学版）》2003年第1期19-22,共4页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(19596034)

摘　　要：运用声学基础理论,对液体中光击穿时所激发声场进行了理论和实验研究。结果表明,当观测点与光击穿区的距离r远大于光击穿长度时,垂直于光传播方向,声脉冲信号的声压幅值最大。沿光播方向,声脉冲信号幅值最小。The force regularity and directvity of the sound field through mechanism of laserinduced liquid breakdown are investigated both theoretically and experimentally according to the model.So a conclusion is drawn that the force regularity and directivity calculated by theory is in good agreement with experiment results.

关 键 词：液体 光击穿 辐射声场 方向性 声学基础理论 声压 等离子柱体 光传播方向 

分 类 号：O472.1[理学—半导体物理] O536[理学—物理]