A coupled two-step plasma instability in PW laser plasma interactions

J T Mendonca, P Norreys, R Bingham, J R Davies

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A possible new mechanism for anomalous ion heating in ultra-intense laser
plasmas is considered here. This mechanism is based on the excitation of
an electron two-stream instability that is driven by the fast electron beam and
resonantly decays into ion-acousticwaves. These lowfrequencywaves are then
strongly damped by the ion collisions in the dense plasma. The model gives
a simple explanation for the preferential heating of the bulk ion population
observed in recent laser experiments in the petawatt (PW) regime.
Original languageEnglish
Pages (from-to)B799-B805
Number of pages7
JournalPlasma Physics and Controlled Fusion
Volume47
Issue number12B
DOIs
Publication statusPublished - 11 Nov 2005

Keywords

  • microinstabilities
  • electrostatic waves and oscillations
  • magnetohydrodynamic fluid equation
  • laser-plasma interaction
  • plasma production
  • plasma kinetic equations

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