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Quasitransient backward Raman amplification of powerful laser pulses in dense plasmas with multicharged ions

Source: Phys. Plasmas 17, 073109 (2010); doi:10.1063/1.3460347

Published 27 July 2010

KEYWORDS and PACS
Keywords
PACS
  • 52.50.Jm
    Plasma production and heating by laser beams
  • 52.35.Fp
    Plasma electrostatic waves and oscillations
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef AIP
V. M. Malkin and N. J. Fisch
Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA
The range of plasma parameters, where the efficient quasitransient backward Raman amplification (QBRA) of powerful laser pulses is possible, is determined for dense plasmas with multicharged ions. Approximate scalings that portray in a simple way the efficient QBRA range in multidimensional parameter space are found. The calculation, applicable to infrared, ultraviolet, soft x-ray, and x-ray laser pulses, takes into account plasma heating by the lasers. It is shown that efficient QBRA can survive even the nonsaturated linear Landau damping of the Langmuir wave mediating the energy transfer from the pump to the seed laser pulse; moreover, this survival does not require very intense seed laser pulses. ©2010 American Institute of Physics
History: Received 22 March 2010; accepted 14 June 2010; published 27 July 2010
Permalink: http://link.aip.org/link/?PHPAEN/17/073109/1

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