Generation of magnetic field fluctuations in relativistic electron-positron magnetoplasmas

被引：13

作者：

Shukla, Nitin

Shukla, P. K. ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys 4, Fac Phys & Astron, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Ctr Plasma Sci & Astrophys, Fac Phys & Astron, D-44780 Bochum, Germany

[3] Max Planck Inst Extraterr Phys, D-45741 Garching, Germany

[4] Umea Univ, Dept Phys, Ctr Nonlinear Phys, S-90187 Umea, Sweden

[5] Rutherford Appleton Lab, CCLRC Ctr Fundamental Phys, Didcot OX11 0QX, Oxon, England

[6] Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 0NG, Lanark, Scotland

[7] Inst Super Tecn, GoLP Ctr Fis Plasmas, P-1096 Lisbon, Portugal

来源：

PHYSICS LETTERS A | 2007年 / 362卷 / 2-3期

关键词：

D O I：

10.1016/j.physleta.2006.09.095

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is shown that magnetic field aligned equilibrium relativistic plasmas flows can excite electromagnetic fluctuations in a magnetized electronpositron (e-p) plasma. For this purpose, a new dispersion relation is derived by using a relativistic two-fluid model and the Maxwell equations. The dispersion relation admits purely growing instabilities of electromagnetic perturbations across the ambient magnetic field direction. The results have relevance for understanding the origin of magnetic field fluctuations in cosmological and laser-produced plasmas. (c) 2006 Elsevier B.V All rights reserved.

引用

页码：221 / 224

页数：4