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Collisional particle simulation of ion acoustic instability

Published online by Cambridge University Press:  20 December 2006

R. D. SYDORA ,
F. DETERING ,
W. ROZMUS ,
Y. YU. BYCHENKOV ,
A. BRANTOV  and
C. E. CAPJACK
R. D. SYDORA
Affiliation:
Department of Physics, University of Alberta, Edmonton, AB, Canada T6G 2J1
F. DETERING
Affiliation:
Centre de Physique Theorique, Ecole Polytechnique, Palaiseau 91128, France
W. ROZMUS
Affiliation:
Department of Physics, University of Alberta, Edmonton, AB, Canada T6G 2J1
Y. YU. BYCHENKOV
Affiliation:
P.N. Lebedev Physics Institute, Russian Academy of Sciences, Leninskii prospect 53, Moscow 119991, Russia
A. BRANTOV
Affiliation:
Department of Physics, University of Alberta, Edmonton, AB, Canada T6G 2J1
C. E. CAPJACK
Affiliation:
Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada T6G 2J1
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Abstract

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The nonlinear evolution of ion acoustic fluctuations in the presence of a uniform electron drift which exceeds the sound speed and electron–ion collisions is investigated using a collisional particle simulation model for parameters relevant to laser-heated plasmas. The results indicate that for the one-dimensional case, strong electron–ion collisionality can lead to a significantly higher saturation level of the fluctuations, which is comparable to the saturation level in the two-dimensional collisionless regime. This relatively high turbulence level can act to enhance heat flux inhibition and strongly influence the absorption and transport properties of laser-produced plasmas.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 6 , December 2006 , pp. 1295 - 1298
Copyright
2006 Cambridge University Press