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Beat wave cyclotron heating of rippled density plasma

Published online by Cambridge University Press:  21 December 2018

Pushplata  and
A. Vijay
Pushplata
Affiliation:
Department of Physics, GLA University, Mathura-281406, India
A. Vijay*
Affiliation:
Department of Physics, GLA University, Mathura-281406, India
*
Author for correspondence: A. Vijay, Department of Physics, GLA University, Mathura-281406, India. E-mail: anujvijay@gmail.com
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Abstract

Laser beat wave heating of magnetized plasma via electron cyclotron damping is proposed and analyzed. A plasma density ripple is presumed to exist across the magnetic field. Two collinear lasers propagating along the magnetic field exert a beat frequency ponderomotive force on electrons, driving a large amplitude Bernstein quasi-mode which suffers cyclotron damping on electrons. Finite Larmor radius effects play an important role in the heating. Electron temperature initially rises linearly with time. As the temperature rises cyclotron damping becomes stronger and temperature rises rapidly. The process, however, requires ripple wavelength shorter than the wavelength of the beat wave.

Keywords

Beat wave heatingBernstein quasi-modemagnetized plasmaponderomotive force
Type
Research Article
Information
Laser and Particle Beams , Volume 36 , Issue 4 , December 2018 , pp. 465 - 469
Copyright
Copyright © Cambridge University Press 2018 

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