TITLE:
Electron Beam Effects on Kinetic Alfven Waves in the Plasma Sheet Boundary Layer
AUTHORS:
G. Shrivastava, J. Shrivastava
KEYWORDS:
Kinetic Alfven Wave, Electron Beam, Plasma Sheet Boundary Layer
JOURNAL NAME:
Open Access Library Journal,
Vol.1 No.7,
October
7,
2014
ABSTRACT: This work studies the effect of earthward electron beam on kinetic Alfven wave in plasma sheet boundary layer (PSBL). The particle aspect approach is adopted to investigate the trajectories of charged particles in the electromagnetic field of kinetic Alfven wave. Expressions are found for the dispersion relation, growth/damping-rate and associated currents in the presence of electron beam in homogenous plasma. Kinetic effects of electrons and ions are included to study kinetic Alfven wave because both are important in the transition region. The plasma parameters appropriate to plasma sheet boundary layer are used. It is found that downward electron beam affects the dispersion relation, growth/damping-rate and associated currents in both cases (warm and cold electron limit).