ION-ACOUSTIC-WAVES IN A PLASMA WITH NEGATIVE-IONS

被引：106
|
作者：
SONG, B
DANGELO, N
MERLINO, RL
机构：
[1] Department of Physics and Astronomy, University of Iowa, Iowa City
来源：
PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1991年 / 3卷 / 02期
关键词：
D O I：
10.1063/1.859736
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：
Propagation and damping of ion-acoustic waves have been investigated in a Q-machine plasma consisting of K+ positive ions, SF-6 negative ions, and electrons. The phase velocity of the ion-acoustic "fast" mode increases with increasing epsilon, the concentration of negative ions. The wave damping decreases with increasing epsilon, and nearly disappears, for the highest wave frequencies investigated, when epsilon-approximately-greater-than 0.9. Both results are in agreement with predictions from Vlasov theory.
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页码：284 / 287
页数：4
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