水中脉冲放电等离子体通道特性及气泡破裂过程  

A study on the characteristic of plasma and bubble break process of pulsed discharge in water

作　　者：卢新培[1] 潘垣[1] 张寒虹[2] 

机构地区：[1]华中科技大学电力工程系,武汉430074 [2]中国科学技术大学力学系,合肥230026

出　　处：《物理学报》2002年第8期1768-1772,共5页Acta Physica Sinica

摘　　要：利用高速摄影法对水中放电等离子体通道的边界层进行了研究 ,结果表明 ,当输入到单位长度通道内的功率密度较小时 ,通道边界存在较厚的过渡层 ,其亮度明显小于通道中间部分 .根据等离子体通道的高速阴影照片指出该通道沿轴向具有非均匀性 .另外 ,还给出了等离子体气泡最后破裂时的高速阴影照片 。The boundary layer of the channel of pulsed discharg in water is investigated by high speed photography. The experimental results show that there is a thick boundary layer when the power density released in the channel is low, and the brightness at the boundary layer is weaker than that in the middle of the channel. We also show that the plasma is not homogeneous along the channel direction according to the channel's high speed shadowgraph. Finally we show the bubble break process, and point out that the current between the rods which supporting the electrodes induces the bubble break.

关 键 词：水中脉冲放电 通道特性 气泡 破裂过程 水中放电 等离子体 

分 类 号：O539[理学—等离子体物理]