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The velocity dependent Krook model to calculate energetic electron transport in a laser produced plasma

Published online by Cambridge University Press:  01 February 2013

Wallace Manheimer
Wallace Manheimer*
Affiliation:
Laser Plasma Branch, Plasma Physics Division, Naval Research Laboratory, Washington, D.C. and Research Support Instruments, Lanham, Maryland
*
Address correspondence and reprint requests to: Wallace Manheimer, Consultant to the Laser Plasma Branch, Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375. E-mail: [email protected]
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Abstract

Energetic electrons, with energy from many tens to several hundred keV can be generated in laser produced plasmas by such laser plasma instabilities as the 2ωp instability, which occurs at the quarter critical density. It is important to know not only how these are produced, but also how they are transported and deposit their energy in the interior and whether they preheat the fuel. We introduce the velocity dependent Krook approach to this problem, and compare it to other approaches that have appeared in the literature as regards accuracy and economy of incorporating in a fluid simulation. This velocity dependent Krook technique is reasonably accurate and reasonably simple and economical to incorporate into a fluid simulation.

Type
Research Article
Information
Laser and Particle Beams , Volume 31 , Issue 1 , March 2013 , pp. 95 - 104
Copyright
Copyright © Cambridge University Press 2013

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