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High-energy ion tail formation in the ion-acoustic instability: three-dimensional quasilinear approach

Journal Article · · Phys. Fluids; (United States)
DOI:https://doi.org/10.1063/1.863996· OSTI ID:6519276
A three-dimensional study of the quasilinear evolution of the ion distribution function in the current driven ion acoustic instability shows that the high-energy ion tail extends in the direction perpendicular to the electron drift as well as the parallel direction. The parallel and perpendicular tails are characterized by temperatures 20T/sub c/ and 10T/sub c/, respectively, where T/sub c/ is the bulk ion temperature. The fluctuation level W/nT/sub e/ reaches 5 x 10/sup -3/, followed by a decay due to the high-energy tail.
Research Organization:
Department of Physics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0
OSTI ID:
6519276
Journal Information:
Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 26:1; ISSN PFLDA
Country of Publication:
United States
Language:
English