Phys. Rev. A 70, 032722 (2004) [5 pages]Dipole polarizabilities of excited alkali-metal atoms and long-range interactions of ground- and excited-state alkali-metal atoms with helium atomsReceived 13 May 2004; published 30 September 2004 The scalar and tensor dynamic polarizabilities of the first excited 2P1∕2,3∕2 states of the alkali-metal atoms Na, K, and Rb are calculated using relativistic many-body perturbation theory. Comparison with experimental measurements of the static polarizabilities suggests that the errors in the theoretical predictions do not exceed 1%. The dynamic polarizabilities at imaginary frequencies are employed to calculate the long-range van der Waals coefficients for the interaction of ground-state helium atoms with the excited alkali-metal atoms to a probable error of less than 2%. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.032722
DOI:
10.1103/PhysRevA.70.032722
PACS:
34.20.Gj, 32.10.Dk
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