Raman amplification in plasma: Wavebreaking and heating effects

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Farmer, J. P. and Ersfeld, B. and Jaroszynski, D. A. (2010) Raman amplification in plasma: Wavebreaking and heating effects. Physics of Plasmas, 17 (11). p. 113301. ISSN 1070-664X (https://doi.org/10.1063/1.3492713)

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Abstract

A three-wave model has been developed to investigate the influence of wavebreaking and thermal effects on the Raman amplification in plasma This has been benchmarked against a particle-in-cell code with positive results A new regime, the "thermal chirp" regime, has been identified and illustrated Here the shift in plasma resonance due to heating of the plasma by a monochromatic pump allows a probe pulse to be amplified and compressed without significant pump depletion In regimes where damping dominates, it is found that inverse bremsstrahlung dominates at high densities, and improved growth rates may be achieved by preheating the plasma At low densities or high pump intensities, wavebreaking acts to limit amplification The inclusion of thermal effects can dramatically reduce the peak attainable intensity because of the reduced wavebreaking limit at finite temperatures (C) 2010 American Institute of Physics [doi 10 1063/1 3492713]

ORCID iDs

Farmer, J. P., Ersfeld, B. ORCID logoORCID: https://orcid.org/0000-0001-5597-9429 and Jaroszynski, D. A. ORCID logoORCID: https://orcid.org/0000-0002-3006-5492;
  • Item type:Article
    ID code:30191
    Dates:
    Date
    Event
    November 2010
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:11 May 2011 10:46
    Last modified:11 Nov 2024 09:42
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/30191
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