Journal
PHYSICAL REVIEW A
Volume 79, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.052502
Keywords
atomic moments; configuration interactions; Dirac-Fock calculations; electron correlations; gold; hyperfine structure; quadrupole moments
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Funding
- Polish Ministry of Science and Higher Education (MNiSW) [1 P03B 110 30]
- Swedish Research Council
- Academy of Finland
- Helmholtz Association [HA-216]
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The multiconfiguration Dirac-Hartree-Fock model has been employed to calculate the expectation values for the hyperfine splittings of the 5d(9)6s(2) D-2(3/2) and 5d(9)6s(2) D-2(5/2) levels of atomic gold. One-, two-, and three-body electron correlation effects involving all 79 electrons have been included in a systematic manner. The approximation employed in this study is equivalent to a complete-active-space approach. Calculated electric field gradients, together with experimental values of the electric quadrupole hyperfine-structure constants, allow us to extract a nuclear electric quadrupole moment Q(Au-197)=521.5(5.0) mb.
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