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Effects of Nonextensive Ions (Heavier and Lighter) on Ion Acoustic Solitary Waves in a Magnetized Five Component Cometary Plasma with Kappa Described Electrons
Plasma Physics Reports ( IF 1.1 ) Pub Date : 2020-05-19 , DOI: 10.1134/s1063780x20050062
M. Manesh , V. Anu , T. W. Neethu , S. Sijo , G. Sreekala , C. Venugopal

Abstract

We have investigated the propagation characteristics of Ion-Acoustic Solitary Waves (IASWs) in a magnetized, cometary plasma consisting of hydrogen ions, positively and negatively charged oxygen ions, kappa described hot solar electrons, and slightly colder cometary electrons. The effects of q-nonextensive distributions, on both lighter and heavier ions have been studied by deriving the Zakharov–Kuznetsov (ZK) equation. The basic features of IASWs such as amplitude, width, and phase speed have been extensively studied by a numerical analysis of the ZK equation. It is found that superthermality of the electrons and nonextensivity of ions significantly modify the characteristics of the solitary waves. The amplitudes of the solitary waves seem to be well correlated to the presence of water molecules in a cometary plasma and the associated photoionization processes.


中文翻译:

非伸张离子(重和轻)对具有Kappa描述电子的磁化五成分彗星等离子体中离子声孤波的影响

摘要

我们研究了离子声孤波(IASWs)在磁化彗星等离子体中的传播特性,该等离子体由氢离子,带正负电的氧离子,κ描述的热太阳电子和稍冷的彗星电子组成。q的影响通过推导Zakharov–Kuznetsov(ZK)方程,研究了轻离子和重离子上的非广泛分布。IASW的基本特征,例如幅度,宽度和相速度,已经通过ZK方程的数值分析得到了广泛的研究。发现电子的超热和离子的非扩展性显着改变了孤立波的特性。孤波的振幅似乎与彗星等离子体中水分子的存在以及相关的光电离过程密切相关。
更新日期:2020-05-19
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