Phys. Rev. A 71, 032712 (2005) [5 pages]Anisotropic van der Waals coefficients for He(1 1S)–He(2 3P)Received 10 November 2004; published 17 March 2005 We report on the anisotropic mass-dependent dispersion coefficients C6(M=0,±1) for He(1 1S)–He(2 3P) interaction using two different techniques. The first is a highly accurate Hylleraas basis-set diagonalization, while the second method is a semiempirical assessment based on tabulated oscillator strengths and available photoionization cross sections. The results from the two techniques agree to within 1.5%. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.032712
DOI:
10.1103/PhysRevA.71.032712
PACS:
34.20.Cf, 31.15.Ar, 31.15.Ct
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