Energy exchange via multi-species streaming in laser-driven ion acceleration

M. King, R. J. Gray, H. W. Powell, R. Capdessus, P. McKenna

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Abstract

Due to the complex electron dynamics and multiple ion acceleration mechanisms that can take place in the interaction of an ultra-intense laser pulse with a thin foil, it is possible for multiple charged particle populations to overlap in space with varying momentum distributions. In certain scenarios this can drive streaming instabilities such as the relativistic Buneman instability and the ion-ion acoustic instability. The potential for such instabilities to occur are demonstrated using particle-in-cell simulations. It is shown that if a population of ions can be accelerated such that it can propagate through other slowly expanding ion populations, energy exchange can occur via the ion-ion acoustic instability.
Original languageEnglish
Number of pages8
JournalPlasma Physics and Controlled Fusion
Publication statusAccepted/In press - 9 Aug 2016

Keywords

  • plasma instabilities
  • laser plasma interaction
  • laser plasma acceleration
  • ion acceleration
  • electron dynamics
  • laser pulse
  • particle-in-cell simulations
  • ion-ion acoustic instability

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    Energy exchange via multi-species streaming in laser-driven ion acceleration

    King, M. (Creator), Capdessus, R. (Contributor), Gray, R. (Contributor) & McKenna, P. (Contributor), University of Strathclyde, 27 Jul 2016

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