Abstract
Results of relativistic multiconfiguration Dirac-Fock calculations with an extended nucleus are used to analyze the volume isotope shifts of the resonance transitions in the group-IIa and -IIb elements as well as in Yb. This is done together with a review of the isotope shift theory, including a critical evaluation and comparison of the semiempirical calculation of volume isotope shifts commonly used today. Electronic factors , proportional to differences of electronic densities over the nuclear volume, are discussed within various approximations and compared with experimental results.
- Received 30 July 1984
DOI:https://doi.org/10.1103/PhysRevA.31.2038
©1985 American Physical Society