Diffusive radiation in one-dimensional Langmuir turbulence

Gregory Fleishman, I. N. Toptygin

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We calculate spectra of radiation produced by a relativistic particle in the presence of one-dimensional Langmuir turbulence which might be generated by a streaming instability in the plasma, in particular, in the shock front or at the shock-shock interactions. The shape of the radiation spectra is shown to depend sensitively on the angle between the particle velocity and electric field direction. The radiation spectrum in the case of exactly transverse particle motion is degenerate and similar to that of spatially uniform Langmuir oscillations. In the case of oblique propagation, the spectrum is more complex, it consists of a number of power-law regions and may contain a distinct high-frequency spectral peak. The emission process considered is relevant to various laboratory plasma settings and for astrophysical objects as gamma-ray bursts and collimated jets.

Original languageEnglish (US)
Article number017401
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume76
Issue number1
DOIs
StatePublished - Jul 10 2007

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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