Semiempirical calculation of van der Waals coefficients for alkali-metal and alkaline-earth-metal atoms
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چکیده
منابع مشابه
Semiempirical calculation of van der Waals coefficients for alkali-metal and alkaline-earth-metal atoms
The van der Waals coefficients, C6 , C8, and C10 for the alkali-metal ~Li, Na, K, and Rb! and alkaline-earthmetal ~Be, Mg, Ca, and Sr! atoms are estimated by a combination of ab initio and semiempirical methods. Polarizabilities and atom-wall coefficients are given as a diagnostic check, and the lowest order nonadiabatic dispersion coefficient, D8 and the three-body coefficient, C9 are also pre...
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We consider long-range interactions between two alkali-metal atoms in their respective ground states. We extend the previous relativistic many-body calculations of C6 dispersion coefficients @Phys. Rev. Lett. 82, 3589 ~1999!# to higher-multipole coefficients C8 and C10 . Special attention is paid to usually omitted contribution of core-excited states. We calculate this contribution within relat...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2003
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.68.052714