Interaction of lower hybrid wave fields with drift-cyclotron loss-cone instability

Journal Article · Wed Jul 01 04:00:00 EDT 1981 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.863519· OSTI ID:6329369

Shaing, K

The dispersion relation for the drift-cyclotron loss-cone mode in the presence of the lower hybrid wave is calculated using both electrostatic and finite ..beta.. models. It is found that lower hybrid wave fields with frequency ..omega../sub 0/ can stabilize the mode if ..omega../sub l/h<..omega../sub 0/<..omega../sub +/, or ..omega../sub 0/<..omega../sub -/<..omega../sub l/h, where ..omega../sub l/h = ..omega../sub p/i/(1+..omega../sup 2//sub p/e/..omega../sup 2//sub c/e)/sup 1/2/, ..omega../sub plus-or-minus/ = ( +- A+(A/sup 2/+4..omega../sup 2//sub l/h)/sup 1/2/)/2, and A = ..omega../sup 2//sub l/hepsilon/..omega../sub c/ik. If the plasma ..beta.. is greater than a critical value ..beta../sub c/, there is another stabilization region, namely, ..omega../sub 0/>delta..omega../sub l/h, where delta is a numerical constant. Even though the stabilization effect is small in this region, the lower hybrid wave frequency for electron heating should be in this region in order to avoid enhancing the particle loss rate.

• Research Organization: Fusion Engineering Program, Department of Nuclear Engineering, University of Wisconsin, Madison, Wisconsin 53706
• OSTI ID: 6329369
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 24:7; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
CYCLOTRON INSTABILITY
DISPERSION RELATIONS
DISTRIBUTION FUNCTIONS
DRIFT INSTABILITY
ELECTRIC FIELDS
FUNCTIONS
INHOMOGENEOUS PLASMA
INSTABILITY
LOSS CONE INSTABILITY
ORBITS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
STABILIZATION