Journal of Plasma Physics

Table of Contents - 1992 - Volume 47, Issue 02  

Research Article

Poloidal electric field due to electron-cyclotron resonance heating in tokamaks

M. Taguchia1

a1 College of Industrial Technology, Nihon University, 2–11–1 Shinei, Narashino-shi, Chiba-ken 275, Japan

Abstract

The poloidal electric field generated by electron-cyclotron resonance heating is investigated for a tokamak plasma in the collisionless regime. This poloidal electric field is calculated by solving an adjoint equation to the linearized Fokker-Planck equation with a quasi-linear diffusion term. It is found from this calculation that the magnitude and the sign of the poloidal electric field depend strongly on the values of the inverse aspect ratio, the poloidal angle of the absorption point, the parallel velocity of resonant electrons normalized by the thermal velocity, and the strength of the relativistic correction to the resonance condition.

(Received July 02 1991)

(Revised November 23 1991)