Plasma and Fusion Research

Volume 21, 2401011 (2026)

Regular Articles

Adiabatic States of Atomic Hydrogen in Strong Magnetic Fields
Kazuyoshi YAMADA1,2), Daiji KATO2,1)
1)
IGSES, Kyushu University, Fukuoka 816-8580, Japan
2)
National Institute for Fusion Science, Gifu 509-5292, Japan
(Received 6 October 2025 / Accepted 20 November 2025 / Published 31 March 2026)

Abstract

We calculated adiabatic states of atomic hydrogen in strong magnetic fields treating the radial distance of the spherical coordinates as the adiabatic parameter. The results show a transition from diamagnetic Kepler motion in the inner region to gyromotion along the magnetic field at large distances. At the boundary, avoided crossings of adiabatic potential curves occur along the ridge of the diamagnetic potential, indicating strong local non-adiabatic coupling. These findings clarify the mixed Coulomb-magnetic dynamics of hydrogen and contribute to more accurate modeling of atomic processes in strongly magnetized astrophysical environments.

Keywords

adiabatic basis expansion, strong magnetic field, hydrogen atom

DOI: 10.1585/pfr.21.2401011

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