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Title: PLASMA EMISSION BY WEAK TURBULENCE PROCESSES

The plasma emission is the radiation mechanism responsible for solar type II and type III radio bursts. The first theory of plasma emission was put forth in the 1950s, but the rigorous demonstration of the process based upon first principles had been lacking. The present Letter reports the first complete numerical solution of electromagnetic weak turbulence equations. It is shown that the fundamental emission is dominant and unless the beam speed is substantially higher than the electron thermal speed, the harmonic emission is not likely to be generated. The present findings may be useful for validating reduced models and for interpreting particle-in-cell simulations.
Authors:
;  [1] ;  [2] ;  [3]
  1. Instituto de Física, UFRGS, Porto Alegre, RS (Brazil)
  2. Institute for Physical Science and Technology, University of Maryland, College Park, MD (United States)
  3. Instituto de Física e Matemática, UFPel, Pelotas, RS (Brazil)
Publication Date:
OSTI Identifier:
22364499
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 795; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ELECTRONS; EMISSION; NUMERICAL SOLUTION; PLASMA; SOLAR RADIO BURSTS; SOLAR RADIOWAVE RADIATION; SOLAR WIND; SUN; TURBULENCE; VELOCITY