Radiative corrections to the level width in the presence of magnetic field

TL;DR

This paper investigates how constant magnetic fields and thermal environments affect atomic decay rates, emphasizing radiative corrections and their potential for precise spectroscopic and astrophysical applications.

Contribution

It demonstrates the significance of radiative corrections, including magnetic interactions, in atomic decay rates and proposes a method to determine the g-factor via fluorescence observations.

Findings

Radiative corrections significantly influence decay rates in magnetic fields.

The study suggests a new way to measure the g-factor through fluorescence.

Effects are relevant for precision spectroscopy and astrophysics.

Abstract

We study the influence of constant magnetic field combined with a field induced by the external thermal environment on the atomic decay rates. The importance of radiative corrections, including magnetic interaction, is demonstrated for hydrogen and hydrogen-like ions with low nuclear charge values $Z$. Based on the quantum electrodynamics description, the principal possibility of determining the $g$-factor by observing fluorescence is shown. The considered effects can be used in precision spectroscopic experiments and astrophysical studies.