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First direct electron and ion fluid computation of high electrostatic fields in dense inhomogeneous plasmas with subsequent nonlinear laser interaction

Published online by Cambridge University Press:  09 March 2009

P. Lalousis  and
H. Hora
P. Lalousis
Affiliation:
Department of Theoretical Physics, University of New South Wales, Kensington 2033, Australia.
H. Hora
Affiliation:
Department of Theoretical Physics, University of New South Wales, Kensington 2033, Australia.
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Abstract

Computer calculations have been made for a plasma composed of electron and ion fluids, with the electrostatic field as an additional variable described by Poisson's equation, allowing for the first time a hydrodynamic study of the electrostatic phenomena in plasmas, where very short time steps, large computer capacity and special numerical procedures were used. The numerically observed oscillations of the fields and electron fluid and the waves and their damping by collisions have been evaluated and an analytical model has been derived to study damping by Coulomb collisions. The magnitudes of the electrostatic fields in inhomogeneous plasma have been evaluated as functions of temperature and density gradient. For laser irradiation of 1016 W/cm2, including nonlinear forces with the complete intensity dependent (nonlinear) optical response for heating and dielectric force effects, electrostatic fields exceeding 108 V/cm are generated.

Type
Research Article
Information
Laser and Particle Beams , Volume 1 , Issue 3 , August 1983 , pp. 283 - 304
Copyright
Copyright © Cambridge University Press 1983

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