Small amplitude Kinetic Alfven waves in a superthermal electron-positron-ion plasma

被引：16

作者：

Adnan, Muhammad ^{[1
]}

Mahmood, Sahahzad ^{[2
,3
]}

Qamar, Anisa ^{[4
]}

Tribeche, Mouloud ^{[5
]}

机构：

[1] KUST, Dept Phys, Kohat, Pakistan

[2] PINSTECH, TPD, PO Nilore, Islamabad 44000, Pakistan

[3] Natl Ctr Phys, Quaid I Azam Univ Campus,Shahdra Valley Rd, Islamabad 44000, Pakistan

[4] Univ Peshawar, Dept Phys, Peshawar 25000, Pakistan

[5] Univ Bab Ezzouar, USTHB, Fac Sci Phys, Plasma Phys Grp,Theoret Phys Lab, BP 32, Algiers 16111, Algeria

来源：

ADVANCES IN SPACE RESEARCH | 2016年 / 58卷 / 09期

关键词：

Solitons; KdV equation; Kinetic Alfven waves; ACOUSTIC SOLITARY WAVES; 3-DIMENSIONAL STABILITY; NONEXTENSIVE ELECTRONS; PROPAGATION;

D O I：

10.1016/j.asr.2016.07.009

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

We are investigating the propagating properties of coupled Kinetic Alfven-acoustic waves in a low beta plasma having superthermal electrons and positrons. Using the standard reductive perturbation method, a nonlinear Korteweg-de Vries (KdV) type equation is derived which describes the evolution of Kinetic Alfven waves. It is found that nonlinearity and Larmor radius effects can compromise and give rise to solitary structures. The parametric role of superthermality and positron content on the characteristics of solitary wave structures is also investigated. It is found that only sub-Alfvenic and compressive solitons are supported in the present model. The present study may find applications in a low beta electron positron ion plasma having superthermal electrons and positrons. (C) 2016 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：1746 / 1754

页数：9

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