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Effect of ultra intense laser pulse on the propagation of electron plasma wave in relativistic and ponderomotive regime and particle acceleration

Published online by Cambridge University Press:  21 September 2006

ATUL KUMAR ,
M.K. GUPTA  and
R.P. SHARMA
ATUL KUMAR
Affiliation:
Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, India
M.K. GUPTA
Affiliation:
Department of Electronic Science, University of Delhi, South Campus, Delhi, India
R.P. SHARMA
Affiliation:
Centre for Energy Studies, Indian Institute of Technology, New Delhi, India
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Abstract

In this paper, the effect of a relativistically intense Gaussian laser pulse, on the propagation of electron plasma wave is studied. The nonlinear effects considered here are the relativistic decrease of the plasma frequency and the ponderomotive expelling of the electrons. Modified coupled equations for laser and electron plasma wave are derived from fluid equations. These coupled equations are solved analytically and numerically to study the laser intensity in the plasma and the variation of amplitude of the excited electron plasma wave. It is seen that the effect of including the ponderomotive nonlinearity is significant on the excitation of plasma wave. This should affect the number of energetic electrons and their energy range on account of wave particle interaction.

Keywords

Fluid equationsIntense Gaussian laser pulsePonderomotive nonlinearityPropagation of electron plasma waveWave particle interaction
Type
Research Article
Information
Laser and Particle Beams , Volume 24 , Issue 3 , September 2006 , pp. 403 - 409
Copyright
© 2006 Cambridge University Press

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References

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