Phys. Rev. A 68, 062710 (2003) [6 pages]Dispersion coefficients for H and He interactions with alkali-metal and alkaline-earth-metal atomsReceived 18 August 2003; published 30 December 2003 The van der Waals coefficients C6, C8, and C10 for H and He interactions with the alkali-metal (Li, Na, K, and Rb) and alkaline-earth-metal (Be, Mg, Ca, and Sr) atoms are determined from oscillator strength sum rules. The oscillator strengths were computed using a combination of ab initio and semiempirical methods. The dispersion parameters generally agree with close to exact variational calculations for Li-H and Li-He at the 0.1% level of accuracy. For larger systems, there is agreement with relativistic many-body perturbation theory estimates of C6 at the 1% level. These validations for selected systems attest to the reliability of the present dispersion parameters. About half the present parameters lie within the recommended bounds of the Standard and Certain compilation [J. Chem. Phys. 83, 3002 (1985)]. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.062710
DOI:
10.1103/PhysRevA.68.062710
PACS:
34.20.Cf, 31.25.Jf, 31.15.Pf, 32.10.Dk
See AlsoErratum: J. Mitroy and M. W. J. Bromley, Erratum: Dispersion coefficients for H and He interactions with alkali-metal and alkaline-earth-metal atoms [Phys. Rev. A 68, 062710 (2004)], Phys. Rev. A 71, 019903 (2005). Erratum: J. Mitroy and M. W. J. Bromley, Erratum: Semiempirical calculation of van der Waals coefficients and polarizabilities for the alkali-metal and alkaline-earth-metal atoms [Phys. Rev. A 68, 052714 (2003)], Phys. Rev. A 71, 019902 (2005). |
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