论文标题
多组分等离子体中离子声波和相关的孤子的调节不稳定性
Modulational instability of ion-acoustic waves and associated envelope solitons in a multi-component plasma
论文作者
论文摘要
具有温暖离子，同心电子，超热电子和正电子的广义等离子体模型被认为是从理论上研究离子声波（IAWS）的模量不稳定性（MI）。标准的非线性Schrödinger方程是通过应用还原性扰动方法来研究IAWS的MI来得出的。可以观察到，IAW的MI标准通过各种血浆参数显着改变。目前的结果应有助于了解与空间和实验室等离子体系统相关的IAW的MI条件。
A generalized plasma model having warm ions, iso-thermal electrons, super-thermal electrons and positrons is considered to theoretically investigate the modulational instability (MI) of ion-acoustic waves (IAWs). A standard nonlinear Schrödinger equation is derived by applying reductive perturbation method to study the MI of IAWs. It is observed that the MI criteria of the IAWs are significantly modified by various plasma parameters. The present results should be useful in understanding the conditions for MI of IAWs which are relevant to both space and laboratory plasma system.
