Effects of ion cyclotron harmonic damping on current drive in the lower hybrid frequency range

Technical Report · Tue Nov 01 00:00:00 EST 1983

DOI:https://doi.org/10.2172/5651780· OSTI ID:5651780

Wong, K L; Ono, M

We investigate the ion cyclotron harmonic damping effects on slow and fast waves in the lower hybrid frequency range for tokamak reactor parameters. Inclusion of the higher order terms in the hot plasma dielectric tensor introduces ion cyclotron harmonic damping; these terms also contribute to the real part of the dispersion relation and affect the wave trajectories. However, wave absorption by 15 keV deuterium and tritium ions can be avoided by choosing the slow wave frequency above the lower hybrid frequency and the fast wave frequency below the lower hybrid frequency. But preliminary estimates show that energetic alpha particles tend to absorb both the slow and the fast waves. This absorption may become a serious obstacle for fusion-reactor current drive in the lower hybrid frequency range.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5651780
• Report Number(s): PPPL-2058; ON: DE84003464
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CURRENT-DRIVE HEATING
LOWER HYBRID HEATING
DAMPING
DEUTERIUM
DISPERSION RELATIONS
HARMONICS
HOT PLASMA
ICR HEATING
TRITIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ELECTRIC HEATING
HEATING
HIGH-FREQUENCY HEATING
HYDROGEN ISOTOPES
ISOTOPES
JOULE HEATING
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OSCILLATIONS
PLASMA
PLASMA HEATING
RADIOISOTOPES
RESISTANCE HEATING
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production