Kinetic effects in Alfven wave heating Part 2 propagation and absorption with a single minority species

Technical Report · Thu Jun 01 04:00:00 EDT 1989

OSTI ID:5701283

Li, Wann-Quan; Ross, D W; Mahajan, Swadesh M

Kinetic effects of Alfven wave spatial resonances near the plasma edge are investigated numerically and analytically in a cylindrical tokamak model. In Part 1, cold plasma surface Alfven eigenmodes (SAE's) in a pure plasma are examined. Numerical calculations of antenna-driven waves exhibiting absorption resonances at certain discrete frequencies are first reviewed. From a simplified kinetic equation, an analytical dispersion relation is then obtained with the antenna current set equal to zero. The real and imaginary parts of its roots, which are the complex eigenfrequencies, agree with the central frequencies and widths, respectively, of the numerical antenna-driven resonances. These results serve as an introduction to the companion paper, in which it is shown that, in the presence of a minority species, certain SAE's, instead of heating the plasma exterior, can dissipate substantial energy in the two-ion hybrid layer near the plasma center. 11 refs., 8 figs., 1 tab.

• Research Organization: Texas Univ., Austin, TX (USA). Fusion Research Center
• DOE Contract Number: FG05-88ER53266
• OSTI ID: 5701283
• Report Number(s): DOE/ER/53266-25; FRCR-337; ON: DE89016619
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ALFVEN WAVES
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
EQUATIONS
HEATING
HYDROMAGNETIC WAVES
IMPURITIES
KINETIC EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
WAVE EQUATIONS
WAVE PROPAGATION