Physical mechanism of current-free double layers

被引:105
作者
Chen, FF [1 ]
机构
[1] Univ Calif Los Angeles, Los Angeles, CA 90095 USA
关键词
Plasmas;
D O I
10.1063/1.2179393
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Undriven double layers observed in plasmas expanding along magnetic fields are the result of a sheath instability connected with the Bohm criterion. Diverging magnetic field lines cause the presheath acceleration of ions, causing a potential jump resembling that of a double layer. The process stops when it runs out of energy. (c) 2006 American Institute of Physics.
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页数:3
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