Resonance broadening in drift wave turbulence

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859236· OSTI ID:6894328

Ishihara, O; Grabowski, C ^[1]; Hirose, A ^[2]

---

1. Department of Electrical Engineering, Texas Tech University, Lubbock, Texas 79409 (USA)
2. Department of Physics, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 0W0, (Canada)

Turbulent diffusion of electrons in drift modes in a sheared magnetic field is studied by using a test particle numerical experiment. Electrons diffuse across the magnetic field over mode rational surfaces, where electrons interact with waves in resonance. A spatial diffusion coefficient, which describes resonance broadening, is found to be time dependent and departs from quasilinear predictions in stronger turbulence even well before the time when particles hit the resonance boundary of the rational surfaces.

• OSTI ID: 6894328
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Journal Issue: 2 Vol. 2:2; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
DRIFT INSTABILITY
ELECTRON DRIFT
EQUATIONS
EQUATIONS OF MOTION
GUIDING-CENTER APPROXIMATION
INSTABILITY
LINE BROADENING
MAGNETIC FIELDS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA WAVES
RESONANCE
SHEAR
THERMONUCLEAR DEVICES
TIME DEPENDENCE
TOKAMAK DEVICES
TURBULENCE