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Nonlinear saturation of drift waves in sheared magnetic field

Journal Article · · Phys. Fluids; (United States)
DOI:https://doi.org/10.1063/1.863950· OSTI ID:5000969
A nonlinear saturation mechanism of electrostatic drift waves in a sheared magnetic field is presented. The basic physical mechanism is the coupling of the unstable, lowest radial mode to higher modes which are damped because of their short radial wavelengths. Stationary spectra are obtained analytically and applied to the current-driven drift wave instability.
Research Organization:
Institute for Fusion Theory, Hiroshima University, Hiroshima, Japan
OSTI ID:
5000969
Journal Information:
Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 25:9; ISSN PFLDA
Country of Publication:
United States
Language:
English