Effect of a parallel electric field on the whistler mode instability in the magnetosphere

Journal Article · Mon Oct 01 04:00:00 EDT 1979 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA084iA10p05923· OSTI ID:5728507

Misra, K D; Singh, B D; Mishra, S P

A dispersion relation for the whistler mode wave propagation in an anisotropic warm magnetoplasma in the presence of a weak parallel electrostatic field has been derived from linearized coupled Boltzmann-Maxwell equations with collision frequency independent of particle velocity. An expression for the growth rate has been derived in the presence of an electric field and for small temperature anisotropy (A<1) for the whistler mode wave. Under suitable approximation we recover the earlier known results. The modifications introduced in the growth rate by the electric field and temperature anisotropy have been discussed using observed plasma parameters at 6.6 R/sub E/. It is observed that growth (damping) of whistler mode waves is possible when the wave vector is parallel (antiparallel) to the static electric field. The effect of the electric field is more pronounced at low frequency (higher wave number) wave spectrum.

• Research Organization: Applied Physics Section, Institute of Technology, Banaras Hindu University Varanasi-221005 India
• OSTI ID: 5728507
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 84:A10; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640203* -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DISPERSION RELATIONS
DISTRIBUTION FUNCTIONS
EARTH ATMOSPHERE
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
INSTABILITY
INSTABILITY GROWTH RATES
MAGNETOSPHERE
NOISE
PLASMA INSTABILITY
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
WAVE PROPAGATION
WHISTLERS