Large scale multi-configuration Hartree-Fock calculation of the hyperfine structure of the ground state of vanadium

• Authors: Oliver Scharf , Gediminas Gaigalas
• Languages of publication: EN

Abstracts

EN

The hyperfine structure of the ground state of vanadium, 51VI, is calculated in the nonrelativistic framework of the multi-configuration Hartree-Fock approximation. A configuration state function limiting algorithm is used to make the calculations feasible and to study the influence of core, valence and core-valence correlations in detail. The obtained configuration state function space captures the most important orbital correlations within 2%. Further correlations are included through configuration interaction calculation. The atomic state functions are used to evaluate the magnetic dipole hyperfine factor A and the electric quadrupole factor B. It turns out that the ab initio calculation can not capture the core polarization of the 2s shell. It introduces an error that is higher than the Hartree-Fock approximation. However, the detailed correlations being observed suggest the introduction of a wrong correlation orbital due to the algorithm being used. Neglecting this orbital leads to good agreement with 2% deviation from the experimental values for the A factors.

Keywords

EN

Hyperfine structure; ab initio multi-configuration Hartree-Fock; configuration interaction; vanadium; 31.15.Ar; 31.30Gs

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2006
• Volume: 4
• Issue: 1
• Pages: 42-57

Dates

published

1 - 3 - 2006

online

1 - 3 - 2006

Contributors

author

Oliver Scharf

• Research Institute of Theoretical Physics and Astronomy, Vilnius University, A. Goštauto 12, LT-01108, Vilnius, Lithuania

author

Gediminas Gaigalas

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Identifiers

DOI

10.1007/s11534-005-0005-7