Plasma and Fusion Research

Volume 17, 1401081 (2022)

Regular Articles

Experimental Study on the Drift-Alfvén Modes in a Collisional Current-Carrying Finite-β Plasma
Tetsuya AKITSU and Masaaki INUTAKE1)
University of Yamanashi, Professor EMERITUS, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan
1)
Tohoku University, Professor EMERITUS, 6-6-4 Aoba, Aoba-Ku, Sendai, Miyagi 980-8579, Japan
(Received 22 March 2022 / Accepted 6 May 2022 / Published 22 July 2022)

Abstract

A surface-localized mode governing resistive drift-Alfvén mode is experimentally observed in a collisional, current-carrying finite-β plasma, accompanied by an electron diamagnetic-drift frequency spectrum. The half-wavelength travelling along the plasma column with the Alfvén velocity determines the Alfvén mode. The spatial distribution and the phase relation of magnetic components are presented.

Keywords

Drift-Alfvén instability, finite-β plasma

DOI: 10.1585/pfr.17.1401081

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