Scattering and collpase of Langmuir waves driven by a weak electron beam Journal Article uri icon

Overview

abstract

  • The evolution of Langmuir waves predicted by the beam-driven Zakharov equations is studied numerically with high resolution in one and two dimensions, for parameters appropriate to type III solar radio bursts at 0.5 a.u. It is found that collapse is preceded by momentum transfer to ion-acoustic quasimodes even in the absence of a weak solar magnetic field. The early evolution is similar in one and two dimensions. A zero momentum condensate forms in both cases, but its subsequent behavior differs in one dimension and two dimensions. The corresponding real-space wave packets collapse rapidly in two dimensions, but evolve as slowly growing solitons in one dimension. Detailed comparisons are made with other (one-dimensional) models of ’’strong’’ Langmuir turbulence associated with type III bursts.

publication date

  • February 1, 1982

has restriction

  • closed

Date in CU Experts

  • February 4, 2015 8:32 AM

Full Author List

  • Hafizi B; Weatherall JC; Goldman MV; Nicholson DR

author count

  • 4

Other Profiles

International Standard Serial Number (ISSN)

  • 0031-9171

Additional Document Info

start page

  • 392

end page

  • 401

volume

  • 25

issue

  • 2