Abstract
The hyperfine and Zeeman structures of 14 lines of isotope 123Sb covering the UV-NIR spectral range have been measured. The experimental data have been used in order to reanalyse and revise Sb I energy levels. We named majority of them for the first time since they were previously labelled only by their energy values, without any term designations. In both cases of odd- and even-parity levels we took into consideration up to 7 interacting configurations; the set of fine structure parameters and the leading eigenvector percentages of levels as well as their calculated Lande-factors are given. Semi-empirical hfs parameter values extracted from experimental data were compared with ab initio results computed by the use of Cowan code.
Highlights
Natural antimony consists of two stable isotopes 121Sb (I = 5/2) and 123Sb (I = 7/2), with natural abundance of 57% and 43%, respectively
Semi-empirical hfs parameter values extracted from experimental data were compared with ab initio results computed by the use of Cowan code
The experimental energy levels, calculated eigenvalues, resulting LS-percentage of first and second components of the wave functions, and the corresponding LS-term designations are given. In this table our experimental Lande gJ -factors, as well as those found in literature are compared to those deduced from the eigenvector compositions and those computed by ab initio procedure, recurring to Cowan code [37]
Summary
Hyperfine structure splitting A and B constants for levels of the ground configuration of Sb I have been obtained in a number of experiments [3,4,5,6,7,8,9,10,11]. At the beginning of Sb I electronic structure studies, looked into the emission spectrum. In paper [5] the hfs of forbidden lines between levels belonging to the ground configuration of Sb I was studied. In this paper we report results of observation of hfs and Zeeman structure of 14 emission lines of 123Sb I covering the UV-NIR spectral range (363.8÷1074.2) nm
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