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Kinetic and fluid Langmuir wave nonlinearities driven by stimulated Raman scattering in a diffraction limited single-hot-spot

Published online by Cambridge University Press:  02 June 2005

J.L. KLINE  and
D.S. MONTGOMERY
J.L. KLINE
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico
D.S. MONTGOMERY
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico
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Abstract

A diffraction limited focal spot is used to create a single speckle in a preformed plasma. The single speckle, or hot spot, is the simplest irreducible element for studying laser plasma interactions. Using the single hot spot configuration, the nonlinear behavior of SRS driven Langmuir waves has been investigated in both a fluid dominated and a kinetic regime. A transition between the two regimes has been observed as a function of kλD where k is the Langmuir wave-number and λD is the Debye length.

Keywords

Langmuir wave nonlinearitiesLaser plasma instabilitiesSingle hot spotStimulated Raman scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 23 , Issue 1 , March 2005 , pp. 27 - 31
Copyright
2005 Cambridge University Press

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