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Bernstein mode acceleration of electrons in a magnetic mirror

Published online by Cambridge University Press:  05 March 2020

Ram Jeet  and
Asheel Kumar Open the ORCID record for Asheel Kumar [Opens in a new window]
Ram Jeet
Affiliation:
Department of Physics, University of Allahabad, Allahabad211002, Uttar Pradesh, India
Asheel Kumar*
Affiliation:
Department of Physics, University of Allahabad, Allahabad211002, Uttar Pradesh, India
*
Author for correspondence: A. Kumar, Department of Physics, University of Allahabad, Prayagraj-211002. E-mail: [email protected]
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Abstract

Electron dynamics in an axially localized large amplitude electron Bernstein mode in a magnetic mirror is studied. The mode is localized due to plasma density and magnetic field profiles and could be driven by an electron cyclotron wave, launched from outside, via linear mode conversion. Energetic electrons of finite gyro-radius resonantly interact with the mode and gain primarily transverse energy favoring stronger mirror confinement. At Bernstein wave normalized amplitude of A00 = 0.01 and for other normalized parameters Zn0 = 40, k⊥c/ω = 10, ${L}^{\prime}_m = 215$, ωc0/ω = 0.9, ψn0 = 3π/2, the electrons can gain energy in the hundreds of keV range.

Keywords

Electron accelerationelectron Bernstein wavesmagnetic mirrorplasma confinement
Type
Research Article
Information
Laser and Particle Beams , Volume 38 , Issue 2 , June 2020 , pp. 79 - 83
Copyright
Copyright © The Author(s) 2020. Published by Cambridge University Press

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