Abstract

The dust–ion–acoustic (DIA) solitary wave (SW) propagation in a magnetized dusty plasma consisting of mobile positive and heavy negative ions, nonthermal electrons and positrons is presented. By using reductive perturbation technique, three dimensional Zakharov–Kuznetsov (Z–K) equation is derived and the solution is obtained by using the tan-hyperbolic method. Here, the dust grain charging process by plasma constituents is represented by the equation following orbital motion limited (OML) theory. The characteristics features of solitary wave amplitudes arising due to different plasma parameters such as ions mass ratio, nonthermal parameters of electrons and positrons, temperature ratio of electrons and positrons, ions density ratio, and dust density ratio are analyzed. In this analysis, the influence of nonthermal electrons on solitary wave amplitude variation is observed as more significant than that of nonthermal positrons. The findings of this work can be helpful in understanding D, E, and F regions of the Earth’s ionosphere, its mesosphere region, solar photosphere, and Titan’s ionosphere.

中文翻译：

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具有非热分布电子和正电子的磁化等离子体中的尘埃-离子-声孤立波结构

摘要

介绍了由可移动的正离子和重负离子、非热电子和正电子组成的磁化尘埃等离子体中的尘埃-离子-声学 (DIA) 孤立波 (SW) 传播。利用约简微扰技术，推导出三维Zakharov-Kuznetsov(Z-K)方程，并通过tan-双曲方法得到解。在这里，由等离子体成分引起的尘埃颗粒充电过程由遵循轨道运动限制 (OML) 理论的方程表示。分析了离子质量比、正负电子非热参数、正负电子温度比、离子密度比、尘埃密度比等不同等离子体参数引起的孤立波幅值特征。在这个分析中，观察到非热电子对孤立波振幅变化的影响比非热正电子更显着。这项工作的发现有助于了解地球电离层的 D、E 和 F 区域、中间层区域、太阳光层和泰坦电离层。