Interelectronic-interaction contribution to the nonlinear Zeeman effect in boronlike ions

TL;DR

This paper presents relativistic calculations of the nonlinear Zeeman effect in boronlike ions, accounting for interelectronic interactions across a wide range of nuclear charges, aiding experimental interpretation.

Contribution

It provides the first comprehensive evaluation of interelectronic-interaction contributions to the nonlinear Zeeman effect in boronlike ions for various Z values.

Findings

Calculated second- and third-order Zeeman contributions for Z=6 to 92.

Evaluated first-order interelectronic-interaction correction to all orders in αZ.

Results support interpretation of experimental Zeeman splitting data.

Abstract

Relativistic calculations of the second- and third-order contributions in magnetic field to the Zeeman splitting in boronlike ions are presented for the wide range of nuclear charge numbers $Z=6$--$92$. The interelectronic-interaction correction of the first order in $1/Z$ is evaluated to all orders in $\alpha Z$. The higher-order corrections in $1/Z$ are taken into account approximately by means of effective screening potentials. The obtained results are important for interpretation of experimental data on the Zeeman splitting in boronlike ions, in particular, for the ARTEMIS experiment presently implemented at GSI.