Work

On the magnetic drift deflection of plasma particles in axisymmetric tokamaks

Year: 2025

Type: article

Abstract: The drift trajectories of untrapped (passing, circulating) and trapped particles have been analyzed in the axisymmetric tokamaks with circular and elliptic magnetic surfaces for arbitrary aspect ratios and elongation. Analytical expressions for the drift deflections and orbit-widths of plasma particles are derived using the self-consistent collisionless drift-kinetic equation for plasma particles in a tokamak with circular magnetic surfaces. The computational results demonstrate that the direction of toroidal magnetic drift of plasma particles is significantly influenced by the sign of their charge, the direction of their parallel velocity relative to the equilibrium magnetic field, and the particle's initial (starting) position on the magnetic surface. In the case of elongated tokamaks, the existence of the usual t-trapped particles and two groups of d-trapped particles on the elliptic magnetic surfaces is examined.

Source: Physics of Plasmas

DOI: 10.1063/5.0238004

Authors: N. I. Grishanov, N. A. Azarenkov

Institutions: Ukrainian State University of Railway Transport, V. N. Karazin Kharkiv National University, Kharkiv Institute of Physics and Technology

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W4409106249

FWCI:

Cites: 18

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Related to: 10