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Possibility of plasma density diagnostics using Langmuir-wave-caused dips observed in dense laser plasmas

  • F. S. Krasniqi
  • O. Renner
  • E. Dalimier
  • E. Dufour
  • R. Schott
  • E. Förster
Plasma Physics

Abstract.

A systematic study of the Langmuir-wave-caused dips (L dips) observed in profiles of the Al Ly γ line emitted from laser irradiated sandwich targets indicates that these fine spectral features can be used as a tool for density diagnostics in intermediately coupled plasmas. The spectroscopic data required for a reliable identification of L dips were collected by a vertical-geometry Johann spectrometer providing high spectral and spatial resolution. The electron densities deduced from the evolution of the L dips along the laser target axis compare well with those derived from hydrosimulations and from measurements of the line widths and shifts.

PACS.

32.70.Jz Line shapes, widths, and shifts 52.70.La X-ray and gamma-ray measurements 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  • F. S. Krasniqi
    • 1
  • O. Renner
    • 1
    • 2
  • E. Dalimier
    • 3
  • E. Dufour
    • 3
  • R. Schott
    • 3
  • E. Förster
    • 1
  1. 1.Institut für Optik und Quantenelektronik, Friedrich-Schiller-UniversitätJenaGermany
  2. 2.Institute of Physics, Academy of Sciences CRPragueCzech Republic
  3. 3.Physique Atomique dans les Plasmas Denses, Laboratoire pour l'Utilisation des Lasers Intenses, CNRS-École Polytechnique-CEA-Université Paris VIPalaiseau CedexFrance

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