Work

Generation of Spontaneous Magnetic Fields in Strongly Inhomogeneous Fully Ionized Plasma

Year: 2025

Type: article

Abstract: This paper investigates the spontaneous generation of magnetic fields in a fully ionized plasma with collinear density and temperature gradients. It is shown that the magnetic field generation is caused by the development of thermomagnetic (TM) instability in a strongly inhomogeneous plasma. In the long-wavelength limit of TM perturbations, the inhomogeneous region is approximated by a sharp discontinuity in density and temperature. Analytical expressions for the growth rates of magnetic field and temperature perturbations are derived in this regime. The criteria for the onset of TM instability are obtained by taking into account both convective heat transfer and thermomagnetic effects, which determine the conditions for magnetic field generation.

DOI: 10.46813/2025-158-040

Authors: M.I. Kopp, V.V. Yanovsky

Institutions: National Academy of Sciences of Ukraine, State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine, V. N. Karazin Kharkiv National University

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

OpenAlex ID: W4413353162

FWCI:

Cites: 10

Cited by:

Related to: 10