Flow-shear-induced Compton scattering of electron drift instability

Journal Article · Tue Sep 01 04:00:00 EDT 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860153· OSTI ID:7153418

Hahm, T S ^[1]

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1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

Plasma flow-shear effects on nonlinear saturation of electron drift waves are analyzed in the weak turbulence regime. Flow shear can enhance ion Compton scattering of long-wavelength electron drift waves not only by modifying the beat wave--ion resonance condition, but also via the radial dependence of linear susceptibility. A nonlinear dispersion relation is obtained as a solution of the radially nonlocal nonlinear eigenmode equation. At nonlinear saturation, the spectral intensity of the fluctuations scales with flow shear as ({partial derivative}{ital V}{sub 0{var phi}}/{partial derivative}{ital r}){sup {minus}2} in addition to the linear dependence on the linear growth rate, and decays according to a power law {ital k}{sub {theta}}{sup {minus}1}.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7153418
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:9; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330 -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ANNULAR SPACE
BASIC INTERACTIONS
CLOSED CONFIGURATIONS
COMPTON EFFECT
CONFIGURATION
DISPERSION RELATIONS
DRIFT INSTABILITY
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTRON DRIFT
INSTABILITY
INTERACTIONS
MAGNETIC FIELD CONFIGURATIONS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SCATTERING
SPACE
TOROIDAL CONFIGURATION
TRANSPORT THEORY
TURBULENCE