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Phys. Rev. A 72, 022503 (2005) [9 pages]

Calculation of isotope shifts for cesium and francium

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V. A. Dzuba*
School of Physics, University of New South Wales, Sydney 2052, Australia

W. R. Johnson†
Department of Physics, 225 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46566, USA

M. S. Safronova‡
Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA

Received 14 April 2005; published 5 August 2005

We perform ab initio calculations of isotope shifts for isotopes of cesium (from A=123 to A=137) and francium (from A=207 to A=228). These calculations start from the relativistic Hartree-Fock method and make use of several techniques to include correlations. The field (volume) isotope shift is calculated by means of an all-order correlation potential method and within the singles-doubles–partial-triples linearized coupled-cluster approach. Many-body perturbation theory in two different formulations is used to calculate the specific mass shift. We discuss the strong points and shortcomings of the different approaches and implications for parity nonconservation in atoms. Changes in nuclear charge radii are found by comparing the present calculations with experiment.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.022503
DOI:
10.1103/PhysRevA.72.022503
PACS:
31.30.Gs, 31.15.Md, 31.25.Jf, 31.25.Eb

*Electronic address: V.Dzuba@unsw.edu.au

†Electronic address: johnson@nd.edu; URL: www.nd.edu/∼johnson

‡Electronic address: msafrono@physics.udel.edu

 
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