Axial Shock in a Cylindrical Plasma with Current  

作　　者：胡业民 胡希伟 何勇 

机构地区：[1]Department of Modern Physics, University of Science and Techonology of China, Hefei 230026, China Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China [2]College of Electrical and Electronic Engineering, Huazhong University of Science and Techonology, Wuhan 430074, China

出　　处：《Plasma Science and Technology》2006年第5期524-530,共7页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (No. 10175025);in part by the JSPS-CAS Core-University Program on Plasma and Nuclear Fusion

摘　　要：Hugoniot relations of a two-dimensional axial shock with current and magnetic field in a cylindrical shock tube were investigated by a numerical method. The radial profiles of the magnetic field, electric current, pressures, flow velocities and temperatures between the up- and down-stream radial force-balanced plasma of the shock were revealed by numerical analysis. It is clearly found that the axial shock can lead to two effects： one is an inverse skin effect （i.e., the current density rises towards the center of the conductor）, the another is a reversed current effect which occurs near the edge and about a half radius. It is also found that the radial gradient of pressure, density and temperature all become very large near the center due to the axial shock.Hugoniot relations of a two-dimensional axial shock with current and magnetic field in a cylindrical shock tube were investigated by a numerical method. The radial profiles of the magnetic field, electric current, pressures, flow velocities and temperatures between the up- and down-stream radial force-balanced plasma of the shock were revealed by numerical analysis. It is clearly found that the axial shock can lead to two effects： one is an inverse skin effect （i.e., the current density rises towards the center of the conductor）, the another is a reversed current effect which occurs near the edge and about a half radius. It is also found that the radial gradient of pressure, density and temperature all become very large near the center due to the axial shock.

关 键 词：axial shock reversed current effect inverse skin effect 

分 类 号：O53[理学—等离子体物理]