Cyclotron excitation of Alfven and fast magnetosonic waves by passing fusion. cap alpha. particles in a tokamak reactor

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:6488884

Kaladze, T D

The cyclotron excitation of an Alfven wave and of fast magnetosonic waves by passing resonant fast ..cap alpha.. particles with a nonequilibrium velocity distribution is analyzed in the local approximation. These waves propagate obliquely to the magnetic field at an angle far from ..pi../2 in a low-pressure plasma. A detailed numerical analysis of the excitation growth rates is carried out. The results show that only waves which are short along the magnetic-field direction are excited. The waves which are excited have a frequency ..omega..approx. <..omega../sub B//sub i/, where ..omega../sub B//sub i/ is the ion cyclotron frequency. The effect of the tokamak magnetic field gradient (toroidal effects)= on the instability is studied. It is found that the instability depends strongly on the propagation angle and does not occur for cos theta>0.6. Threshold values of the density of ..cap alpha.. particles are found.

• Research Organization: Institute of Applied Mathematics at the I. N. Vekua State University, Tbilisi
• OSTI ID: 6488884
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 12:12; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ALFVEN WAVES
ALPHA PARTICLES
ANNULAR SPACE
CHARGED PARTICLES
CONFIGURATION
DISPERSION RELATIONS
ELECTROMAGNETIC RADIATION
HYDROMAGNETIC WAVES
INSTABILITY
MAGNETOACOUSTIC WAVES
NOISE
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
SPACE
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
TOROIDAL CONFIGURATION
WHISTLERS