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Charged particle acceleration by electron Bernstein wave in a plasma channel

Published online by Cambridge University Press:  21 July 2010

Asheel Kumar ,
Binod K. Pandey  and
V.K. Tripathi
Asheel Kumar*
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India Permanent address: Department of Physics, University of Allahabad, Allahabad-211002, U.P., India
Binod K. Pandey
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
V.K. Tripathi
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
*
Address correspondence and reprint requests to: Asheel Kumar, Department of Physics, University of Allahabad, Allahabad-211002, U.P., India. E-mail: [email protected]
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Abstract

A model of electron acceleration by an electron Bernstein mode in a parabolic density profile is developed. The mode has a Gaussian profile. It could be excited via the mode conversion of an electromagnetic wave or by an electron beam. As it attains a large amplitude, it axially traps electrons moving close to its parallel phase velocity, where parallel refers to the direction of static magnetic field. As the electrons are accelerated and tend to get out of phase with the wave, the transverse field of the mode enhances its energy and relativistic mass, increasing the dephasing length. The scheme can produce electron energies up to a few MeV.

Keywords

Bernstein waveDephasing lengthElectron accelerationPhase velocity
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 3 , September 2010 , pp. 409 - 414
Copyright
Copyright © Cambridge University Press 2010

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