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Using X-ray spectroscopy of relativistic laser plasma interaction to reveal parametric decay instabilities: A modeling tool for astrophysics

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  • E. Oks
  • E. Dalimier
  • A. Ya Faenov
  • P. Angelo
  • S. A. Pikuz
  • E. Tubman
  • N. M H Butler
  • R. J. Dance
  • T. A. Pikuz
  • I. Yu Skobelev
  • M. A. Alkhimova
  • N. Booth
  • J. Green
  • C. Gregory
  • A. Andreev
  • A. Zhidkov
  • R. Kodama
  • P. McKenna
  • N. Woolsey


Publication details

JournalOptics Express
DateAccepted/In press - 9 Jan 2017
DateE-pub ahead of print - 24 Jan 2017
DatePublished (current) - 6 Feb 2017
Issue number3
Number of pages15
Pages (from-to)1958-1972
Early online date24/01/17
Original languageEnglish


By analyzing profiles of experimental x-ray spectral lines of Si XIV and Al XIII, we found that both Langmuir and ion acoustic waves developed in plasmas produced via irradiation of thin Si foils by relativistic laser pulses (intensities ∼1021 W/cm2). We prove that these waves are due to the parametric decay instability (PDI). This is the first time that the PDI-induced ion acoustic turbulence was discovered by the x-ray spectroscopy in laser-produced plasmas. These conclusions are also supported by PIC simulations. Our results can be used for laboratory modeling of physical processes in astrophysical objects and a better understanding of intense laser-plasma interactions.

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© 2017 Optical Society of America. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.


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