Quasi-linear saturation effects on electron-cyclotron-wave damping of the ordinary mode in tokamak plasmas

Technical Report · Wed Sep 01 00:00:00 EDT 1982

DOI:https://doi.org/10.2172/6695608· OSTI ID:6695608

Fidone, I; Meyer, R L; Granata, G

Quasi-linear theory of electron cyclotron wave absorption for the ordinary mode propagating normal to the tokamak magnetic field is investigated. A two-dimensional initial value code has been developed to investigate the distortion of the electron momentum distribution from an initial Maxwellian. It is shown that for powers of interest for electron heating in future tokamaks, Coulomb electron collisions are not sufficient to avoid quasi-linear flattening of the electron distribution and therefore are not sufficient to avoid a reduction in the damping rate as compared to the linear case.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Association Euratom-CEA sur la Fusion, Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6695608
• Report Number(s): PPPL-1935; ON: DE83001395
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ECR HEATING
ELECTROMAGNETIC RADIATION
DAMPING
TOKAMAK DEVICES
ABSORPTION
CYCLOTRON FREQUENCY
DISTRIBUTION FUNCTIONS
ELECTRON TEMPERATURE
QUASILINEAR PROBLEMS
CLOSED PLASMA DEVICES
FUNCTIONS
HEATING
HIGH-FREQUENCY HEATING
PLASMA HEATING
RADIATIONS
THERMONUCLEAR DEVICES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production