Fluid closures which mimic wave-praticle interactions in strong Langmuir turbulence

A new two-time-scale model of strong Langmuir turbulence has been constructed, using higher-moment fluid equations with dissipative closures designed to better simulate Vlasov theory predictions of linear wave properties, and to treat collisionless heating of particles by waves. Numerical solutions...

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Bibliographic Details
Published in:Physical review letters 1993-06, Vol.70 (26), p.4075-4078
Main Authors: Goldman, MV, Newman, DL, Perkins, FW
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONLESS PLASMA
COUPLING
ELECTRON TEMPERATURE
HEATING
ION ACOUSTIC WAVES
ION WAVES
NUMERICAL SOLUTION
PLASMA
PLASMA HEATING
PLASMA SIMULATION
PLASMA WAVES 700340 > Plasma Waves, Oscillations, & Instabilities-- (1992-)
SIMULATION
TURBULENCE
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Summary:A new two-time-scale model of strong Langmuir turbulence has been constructed, using higher-moment fluid equations with dissipative closures designed to better simulate Vlasov theory predictions of linear wave properties, and to treat collisionless heating of particles by waves. Numerical solutions are carried out in a study of electron heating associated with collapse and burnout of a large-amplitude initial Langmuir wave and in a study of radiation-driven Langmuir turbulence interacting with ion-acoustic [ital quasimodes] in plasmas with [ital T][sub [ital e]][approx][ital T][sub [ital i]].
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.70.4075