Work

Low-frequency zonal flow eigen-structures in tokamak plasmas

Year: 2021

Type: article

Abstract: The nonlocal eigenmode analysis of low-frequency zonal flows (ZFs) in toroidally rotating tokamak plasmas is performed in the framework of the reduced one-fluid ideal magnetohydrodynamic model. It is shown that for typical profiles of plasma parameters toroidal plasma rotation results in the global ZF formation on the periphery of plasma column. For some types of equilibria these ZFs are aperiodically unstable that leads to the excitation of the differential plasma rotation at the tokamak plasma edge.

Source: Nuclear Fusion

DOI: 10.1088/1741-4326/ac3f4c

Authors: V.I. Ilgisonis, V.P. Lakhin, N.A. Marusov, A.I. Smolyakov, E.A. Sorokina

Institutions: Rosatom (Russia), Peoples' Friendship University of Russia, Kurchatov Institute, University of Saskatchewan

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Russian Foundation for Basic Research, RUDN University

Awards: G2934504215, G6609605077