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

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.