MCDHF calculations of isotope shifts of even-parity fine-structure levels in neutral osmium

• Published in: Journal of quantitative spectroscopy & radiative transfer Vol. 185; pp. 70 - 78
• Main Authors: Palmeri, P., Quinet, P., Bouazza, S.
• Format: Journal Article Web Resource
• Language: English
• Published: Elsevier Ltd 01-12-2016; Pergamon Press - An Imprint of Elsevier Science
• Subjects: Fine structure; Isotope shift; Neutral osmium; Physical, chemical, mathematical & earth Sciences; Physics; Physique; Physique, chimie, mathématiques & sciences de la terre; Relativistic effects; Fine structure; Neutral osmium; Isotope shift; Relativistic effects
• ISSN: 0022-4073; 1879-1352
• DOI: 10.1016/j.jqsrt.2016.08.014

Ab initio multiconfiguration Dirac–Hartree–Fock (MCDHF) calculations have been carried out in order to determine the isotope shifts of all the fine-structure levels belonging to the even-parity configurations (5d+6s)8 in neutral osmium, Os I. The theoretical predictions have been compared to laser spectroscopy measurements available in the literature showing a good agreement between theory and experiment.
•Ab initio fully relativistic MCDHF calculations of isotope shifts have been carried in neutral osmium.•Relativistic normal mass shift, specific mass shift and field-shift factor electronic parameters are given for all known even-parity fine-structure levels belonging to the (5d+6s)8 configurations.•Comparison with experimental fine-structure level shifts shows a good agreement with our MCDHF predictions.