Pulsed high-current discharge in water:adiabatic model of expanding plasma channel and acoustic wave  

作　　者：A KOZYREV A ZHERLITSYN N SEMENIUK 

机构地区：[1]Institute of High-Current Electronics,Russian Academy of Sciences,Tomsk 634055,Russia

出　　处：《Plasma Science and Technology》2022年第3期123-129,共7页等离子体科学和技术（英文版）

基　　金：carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation on the topic(No.FWRM-20210001);the grant of the Russian Foundation for Basic Research(RFBR),project No.18-29-24079 mk。

摘　　要：This paper presents the results of a theoretical and experimental study of the use of a pulsed discharge in water to obtain a strong acoustic wave in a liquid medium.A discharge with a current amplitude of 10 kA,a duration of 400 ns,and an amplitude pulsed power of 280 MW in water at atmospheric pressure created an expanding acoustic wave with an amplitude of more than 100 MPa.To describe the formation of the discharge channel,an isothermal plasma model has been developed,which made it possible to calculate both the expansion dynamics of a high-current channel and the strong acoustic wave generated by it.Our calculations show that the number density of plasma in the channel reaches 10^(20) cm^(-3),while the degree of water vapor ionization is about 10%,and the channel wall extends with a velocity of 500 m s^(−1).The calculations for the acoustic wave are in good agreement with measurements.

关 键 词：plasma applications electrical discharge in water dense plasma channel 

分 类 号：O53[理学—等离子体物理]