Parametric instabilities of electron cyclotron waves in plasmas

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.863904· OSTI ID:5013825

Tripathi, V K; Liu, C S

The parametric instabilities of electron cyclotron waves in (i) the EBT ring and (ii) the large tokamaks, e.g., PLT, have been studied. In EBT, the electron cyclotron pump of finite wavenumber k/sub 0/ decays into two Bernstein modes at the second harmonic cyclotron layer and can account for the heating of the ring in the initial phase. The coupling coefficient for this decay vanishes for a dipole pump, whereas the convective threshold with finite k/sub 0/ is approximately 200 W/cm/sup 2/. For large tokamaks, the convective threshold for various decay channels turns out to be approximately 200 kW/cm/sup 2/ at 3 mm wavelength.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 5013825
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 25:8; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
BERNSTEIN MODE
BREMSSTRAHLUNG
CLOSED PLASMA DEVICES
CYCLOTRON HARMONICS
CYCLOTRON RADIATION
ECR HEATING
ELECTROMAGNETIC RADIATION
ELECTRON RINGS
ELMO BUMPY TORUS
ELMO DEVICES
HARMONICS
HEATING
HIGH-FREQUENCY HEATING
INSTABILITY
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
OSCILLATION MODES
OSCILLATIONS
PARAMETRIC INSTABILITIES
PLASMA
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RADIATIONS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
WAVE PROPAGATION