Spontaneously growing, weakly propagating, transverse fluctuations in anisotropic magnetized thermal plasmas

Journal Article · Sat Jan 15 04:00:00 EST 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3532787· OSTI ID:21532156

Schlickeiser, R; Lazar, M ^[1]; Skoda, T ^[1]

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1. Institut fuer Theoretische Physik, Lehrstuhl IV: Weltraum-und Astrophysik, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

A new dispersion formalism describing the weakly propagating, transverse fluctuations with wave vectors (k-vector || B-vector) parallel to the uniform background magnetic field B-vector in an anisotropic bi-Maxwellian magnetized electron-proton plasma is presented. Different transverse right-handed or left-handed polarized modes can be excited, which are the whistler Weibel-like modes and the electron and proton firehose modes. Analytic instability threshold conditions are derived in terms of the combined temperature anisotropy A=T{sub perpendicular}/T{sub ||}, the parallel plasma beta {beta}{sub ||}=8{pi}n{sub e}k{sub B}T{sub ||}/B{sup 2}, and the electron plasma frequency phase speed w={omega}{sub p,e}/(kc).

• OSTI ID: 21532156
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 18; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
FLUCTUATIONS
INSTABILITY
PLASMA
PLASMA INSTABILITY
PLASMA WAVES
VARIATIONS