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Self-magnetic field effects on laser-driven wakefield electron acceleration in axially magnetized ion channel

Published online by Cambridge University Press:  05 October 2020

A. Kargarian
Affiliation:
Plasma and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, Tehran 14399-51113, Iran
K. Hajisharifi
Affiliation:
Department of Physics and Institute for Plasma Research, Kharazmi University, 49 Dr. Mofatteh Avenue, Tehran 15719-14911, Iran
Corresponding
E-mail address:

Abstract

In this paper, we have investigated the relativistic electron acceleration by plasma wave in an axially magnetized plasma by considering the self-magnetic field effects. We show that the optimum value of an external axial magnetic field could increase the electron energy gain more than 40% than that obtained in the absence of the magnetic field. Moreover, results demonstrate that the self-magnetic field produced by the electric current of the energetic electrons plays a significant role in the plasma wakefield acceleration of electron. In this regard, it will be shown that taking into account the self-magnetic field can increase the electron energy gain up to 36% for the case with self-magnetic field amplitude Ωs = 0.3 and even up to higher energies for the systems containing stronger self-magnetic field. The effects of plasma wave amplitude and phase, the ion channel field magnitude, and the electron initial kinetic energy on the acceleration of relativistic electron have also been investigated. A scaling law for the optimization of the electron energy is eventually proposed.

Type
Research Article
Copyright
Copyright © The Author(s) 2020. Published by Cambridge University Press

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