Landé g-factors along the sixth row of the periodic table

Abstract

Landé g-factors are calculated, in intermediate coupling, for 2084 levels belonging to atoms or ions of the sixth row of the periodic table. Extensive configuration interaction and relativistic effects are included in the framework of the relativistic Hartree-Fock approximation including core-polarization effects. The results have been refined using least-squares fittings of the Hamiltonian eigenvalues to the observed energy levels (when available). The new results fill in some gaps in the existing data for a large number of levels belonging to ions of astrophysical interest and are expected to be useful for investigating magnetic fields in CP stars.

Recent progress in spectroscopy of tungsten1This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

“…Biémont et al [23] presented theoretical Landé factors of W II and W III calculated using the parametric semiempirical models developed by Nilsson et al [16] and Palmeri et al [15]. The calculated values are in good agreement with available experimental data [1], but cover much larger sets of energy levels.…”

Hyperfine structures and Landé gJ-factors for n=2 states in beryllium-, boron-, carbon-, and nitrogen-like ions from

“…Investigations of these magnetic fields require knowledge of accurate Landé g J -factors [10]. There is also a need for data to support polarization measurements of the coronal magnetic field [11].…”

Hyperfine structures and Landé $g_J$-factors for $n=2$ states in beryllium-, boron-, carbon-, and nitrogen-like ions from relativistic configuration interaction calculations

“…γ P J||T (2) ||γ P J κ πI||M (2) ||κ πI . (10) Using the conventional definition of the nuclear magnetic dipole moment µ I and the nuclear electric quadrupole moment Q, we define hyperfine interaction constants that are not depending on the F quantum numbers…”

“…Strong magnetic fields have been detected in hot stars of types O, B, and A. Investigations of these magnetic fields require knowledge of accurate Landé g J -factors [10]. There is also a need for data to support polarization measurements of the coronal magnetic field [11].…”