Characterization of wavebreaking time and dissipation of weakly nonlinear wakefields due to ion motion

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5 Citations (Scopus)

Abstract

In an initially uniform plasma, the lifetime of a weakly nonlinear plasma wave excited by a short driver is limited by the ion dynamics. The wakefield contains a slowly varying radial component, which results in a perturbation of the ion density profile and consequent destruction of the plasma wave. We suggest a novel method of characterizing the wave lifetime in numerical simulations quantitatively and study how the lifetime scales with the ion mass. We also discuss the implications of the limited lifetime on a recently proposed method of generating high-power terahertz radiation with counterpropagating wakefields driven by colliding laser pulses.

Original languageEnglish
Article number103103
Number of pages4
JournalPhysics of Plasmas
Volume25
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018

Keywords

  • SHORT LASER-PULSE
  • DYNAMICS

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