Role of ICRF-induced ponderomotive force on the tokamak edge plasma

Conference · Tue Sep 01 04:00:00 EDT 1987 · AIP Conf. Proc.; (United States)

OSTI ID:7020557

Myra, J R; D'Ippolito, D A; Francis, G L

The ponderomotive force due to applied ICRF waves can influence MHD equilibrium and stability. Conditions on chemically bondEchemically bond/sup 2/ for stabilization of kink and ballooning modes are summarized. The ponderomotive force is found to be particularly important in the edge plasma when strongly evanescent surface waves with a significant E/sub parallel/ component are produced (e.g. by ion Bernstein wave couplers). The solution of a simple model for the ICRF field penetration indicates that a stabilizing ponderomotive force layer about 1 cm in thickness is achievable for an edge density of 2 x 10/sup 12/ cm/sup -3/ and a parallel electric field of about 250 V/cm. Order-of-magnitude estimates of the corresponding ICRF power are discussed.

• Research Organization: Science Applications International Corporation, Plasma Research Institute, 1515 Walnut St., Boulder, CO 80302
• OSTI ID: 7020557
• Report Number(s): CONF-870570-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 159:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
BALLOONING INSTABILITY
CLOSED PLASMA DEVICES
CONFINEMENT
ELECTRIC POTENTIAL
END EFFECTS
EQUILIBRIUM
FLUID MECHANICS
HEATING
HIGH-FREQUENCY HEATING
HYDRODYNAMICS
ICR HEATING
INSTABILITY
KINK INSTABILITY
MAGNETOHYDRODYNAMICS
MATHEMATICAL MODELS
MECHANICS
NUMERICAL SOLUTION
PLASMA
PLASMA CONFINEMENT
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
STABILIZATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES