Dust-ion-acoustic double layers in multi-ion dusty plasma

被引:7
|
作者
Mamun, A. A. [1 ]
Deeba, F. [2 ]
机构
[1] Jahangirnagar Univ, Dept Phys, Dhaka 1342, Bangladesh
[2] Dhaka Univ Engn & Technol, Dept Phys, Gazipur 1700, Bangladesh
关键词
MULTICOMPONENT PLASMA; COMPLEX PLASMAS; SHOCK-WAVES; SOLITARY WAVES; SOLITONS; PROPAGATION;
D O I
10.1134/S1063780X1508005X
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
A theoretical investigation has been made on nonplanar (cylindrical and spherical) dust-ionacoustic (DIA) double layers (DLs) in a multi-ion dusty plasma system containing inertial positive and negative ions and arbitrarily charged stationary dust. The dust particles have been considered as arbitrarily (either positively or negatively) charged in order to observe the effects of the dust polarity on the DIA DLs. The ion species were considered to be at different temperatures to observe the effects of the temperatures on that waves. The modified Gardner equation, which has been derived by employing the reductive perturbation method, has been used to analyze time-dependent nonplanar and planar DIA DLs. It has been found that the time evolution of DIA DLs is significantly modified not only by the nonplanar geometry, but also by the polarity, temperature, and mass ratio of the constituent particles. It has been also found that the amplitude of cylindrical DIA DL structures is larger than that of 1D planar ones, but smaller than that of the spherical ones.
引用
收藏
页码:667 / 676
页数:10
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