Modulation instability and rogue wave structures of positron-acoustic waves in q-nonextensive plasmas

被引：13

作者：

Bains, A. S. ^{[1
,2
]}

Tribeche, Mouloud ^{[3
,4
]}

Saini, N. S. ^{[5
]}

Gill, T. S. ^{[5
]}

机构：

[1] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada

[2] Shandong Univ, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China

[3] Univ Bab Ezzouar, USTHB, Fac Phys, PPG,TPL, BP 32, Algiers 16111, Algeria

[4] Algerian Acad Sci & Technol, Algiers, Algeria

[5] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2017年 / 466卷

关键词：

Nonlinear Schrodinger equation; Modulational instability; Nonextensivity; Tsallis statistical mechanics; ELECTRON-POSITRON; ION PLASMA; SOLITONS;

D O I：

10.1016/j.physa.2016.09.003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A theoretical investigation is made to study envelope excitations and rogue wave structures of the newly predicted positron-acoustic waves (PAWs) in a plasma with nonextensive electrons and nonextensive hot positrons. The reductive perturbation technique (RPT) is used to derive a nonlinear Schrodinger equation-like (NLSE) which governs the modulational instability (MI) of the PAWs. The NLSE admits localized envelope solitary wave solutions of bright and dark type. These envelope solutions depend upon the intrinsic plasma parameters. It is found that the MI of the PAWs is significantly affected by nonextensivity and other plasma parameters. Further, the analysis is extended for the rogue wave structures of the PAWs. The findings of the present investigation should be useful in understanding the acceleration mechanism of stable electrostatic wave packets in four components nonextensive plasmas. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：111 / 119

页数：9

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