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Nonlinear modeling of start-up phase pressure spectra from optically smoothed induced spatial incoherence laser imprint

Phys. Plasmas 12, 112703 (2005); doi:10.1063/1.2134769

Published 28 November 2005

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M. J. Keskinen
Charged Particle Physics Branch, Plasma Physics Division, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375-5346

A. Schmitt
Laser Plasma Branch, Plasma Physics Division, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375-5346
The spectrum of early time pressure perturbations, due to optically smoothed induced spatial incoherence (ISI) laser imprint, is computed for a planar target using a forced, dissipative model. The time-dependent ISI laser deposition is computed using a time-dependent electromagnetic full-wave Maxwell code. It is found that the pressure spectrum evolves into a power law in which spectral power is transferred from large to smaller scales through a nonlinear cascade process. The model results are compared with experimental observations. ©2005 American Institute of Physics
History: Received 27 July 2005; accepted 14 October 2005; published 28 November 2005
Permalink: http://link.aip.org/link/?PHPAEN/12/112703/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.35.Mw
    Nonlinear phenomena: plasma waves, wave propagation and other interactions including parametric effects, mode coupling, ponderomotive effects, etc
  • 52.25.-b
    Plasma properties
  • 52.38.Dx
    Laser light absorption in plasmas including collisional, parametric, etc
  • YEAR: 2005

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PUBLICATION DATA

ISSN:
1070-664X (print)   1089-7674 (online)
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REFERENCES (19)
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