Dust ion acoustic solitons in a dusty plasma with positive and negative ions

被引:0
|
作者
Grecu, D. [1 ]
Grecu, A. T. [1 ]
机构
[1] Natl Inst Phys & Nucl Engn, Dept Phys Theor, Bucharest, Romania
来源
关键词
acoustic soliton; dusty plasma; positive and negative ions; isothermal electrons; KdV equation;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
One considers a non-relativistic cold plasma containing isothermal electrons (electrons in equilibrium with the local potential), positive ions, a small amount of lighter negative ions, and negatively charged dust grains. Many years ago Watanabe (J. Phys. Soc. Japan, 53,950 (1984)) has shown that for such a plasma, without dust particles, there is a critical concentration of negative ions for which the relevant equation describing the evolution of a nonlinear ion-acoustic wave is the modified KdV equation. The same problem, of dust ion-acoustic solitons evolution, is discussed here for a dusty plasma using convenient stretched variables, for several concentrations of the light negative ions.
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页码:80 / 84
页数:5
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