1976•Physical Review LettersRequires access

Simultaneous Measurements of the Plasma Current Profile and Instabilities in a Tokamak

K. Makishima, T. Tominaga, Hiroshi Tohyama, S. Yoshikawa

Abstract

In a small-scale tokamak, magnetohydrodynamic instabilities of small wave numbers, including the $m=1$ mode with positive voltage spikes, were observed. They were identified as kink modes and resistive tearing modes, by a direct measurement of the plasma current profile. Relations between the fluctuations and the current profile show a qualitative agreement with the theory of kink and resistive tearing modes.

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Key concepts: Tokamak, Tearing, Magnetohydrodynamic drive, Resistive touchscreen, Physics, Plasma, Current (fluid), Magnetohydrodynamics