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Phys. Rev. A 74, 022504 (2006) [5 pages]

Relativistic many-body calculations of the Stark-induced amplitude of the 6P1∕2-7P1∕2 transition in thallium

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M. S. Safronova*
Department of Physics and Astronomy, 223 Sharp Lab, University of Delaware, Newark, Delaware 19716, USA

W. R. Johnson†
Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA

U. I. Safronova‡ and T. E. Cowan
Physics Department, University of Nevada, Reno, Nevada 89557, USA

Received 11 April 2006; published 8 August 2006

Stark-induced amplitudes for the 6P1∕2-7P1∕2 transition in Tl I are calculated using the relativistic singles-doubles (SD) approximation in which single and double excitations of Dirac-Hartree-Fock levels are summed to all orders in perturbation theory. Our SD values αS=368a03 and ∣βS∣=298a03 are in good agreement with the measurements αS=377(8)a03 and βS=313(8)a03 by D. DeMille, D. Budker and E. D. Commins Phys. Rev. A 50 4657 (1994)]. Calculations of the Stark shifts in the 6P1∕2-7P1∕2 and 6P1∕2-7S1∕2 transitions are also carried out. The Stark shifts predicted by our calculations agree with the most accurate measured values within the experimental uncertainties for both transitions.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.74.022504
DOI:
10.1103/PhysRevA.74.022504
PACS:
31.15.Ar, 31.15.Md, 32.10.Fn, 32.70.Cs

*Electronic address: msafrono@udel.edu

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

‡Electronic address: usafrono@nd.edu; On leave from ISAN, Troitsk, Russia

 
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