Ion Acoustic Solitary Waves and Double-Layer Propagation in an Unmagnetized Plasma With Degenerate Electrons

被引：3
作者：
Ghallab, Abdullah [1 ]
El-Taibany, Wael Farouk [2 ]
Aziz, Mona Abdel [1 ]
机构：
[1] Ain Shams Univ, Fac Sci, Dept Phys, Cairo 11566, Egypt
[2] Damietta Univ, Fac Sci, Dept Phys, New Damietta 34517, Egypt
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2021年 / 49卷 / 09期
关键词：
Plasmas; Ions; Germanium; Iron; Solitons; Mathematical model; Plasma temperature; Degenerate electrons; Gardner equation (GE); ion-acoustic (IA) solitary waves (SWs); reductive perturbation technique; unmagnetized plasma; WARM MULTICOMPONENT PLASMA; GARDNER SOLITONS; NONLINEAR-THEORY; TEMPERATURE;
D O I：
10.1109/TPS.2021.3101197
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：
The nonlinear propagation of ion-acoustic (IA) solitons and double layers (DLs) in a nonrelativistic degenerate plasma is investigated. This plasma model consists of negative ions, positive ions, and degenerate electrons. The Gardner equation is derived using the reductive perturbation technique. Both the Gardner solitons and DLs exist in our model. The characteristics of these waves are analyzed. It is found that the properties of these structures depend on the densities, the temperature, and the mass ratio of the ions and also on the chemical potential of the degenerate electrons. Additionally, it is found that the system sustains two different IA modes with different phase velocities known as slow and fast IA modes. These investigations can be useful in space plasma situations that contain opposite polarity ions such as compact astrophysical objects like white dwarfs.
引用
收藏
页码：2629 / 2636
页数：8
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