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Amplitude saturation effect of a laser-driven plasma beat-wave on electron accelerations

Published online by Cambridge University Press:  24 March 2015

D. N. Gupta ,
Mamta Singh  and
H. Suk
D. N. Gupta*
Affiliation:
Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India
Mamta Singh
Affiliation:
Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India
H. Suk
Affiliation:
Department Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 500 712, South Korea
*
†Email address for correspondence: dngupta@physics.du.ac.in
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Abstract

A large-amplitude plasma beat-wave driven by two lasers (differing in frequencies equal to the plasma frequency) can accelerate the plasma electrons to a higher energy level. As the plasma beat-wave grows, it becomes susceptible to oscillating two-stream instability. The decayed sideband plasma wave couples with the pump wave to divert its energy by the instability, and saturates it. The saturated amplitude of the plasma beat-wave traps the electrons more effectively to accelerate them to higher energy. The saturation of plasma beat-wave amplitude is shown to have a significant effect in an electron energy gain.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 3 , June 2015 , 905810324
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Copyright
Copyright © Cambridge University Press 2015 

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