Analytical Formulas for Long-Range Energies of the 16 Ω(+/−)g,uStates of Alkali Dimers Dissociating into M(ns) +M(np2PJ)
✍ Scribed by M. Aubert-Frécon; G. Hadinger; S. Magnier; S. Rousseau
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 216 KB
- Volume
- 188
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
Analytical formulas for long-range energies of the 16 V ( / / 0 ) g ,u states of alkali dimers dissociating into M(ns) / M(np 2 P J ) are displayed in terms of the long-range C n coefficients for the 2 S /1 L ( / ) g ,u corresponding states, and including exchange interaction energy contributions. Corrections due to retardation effects for resonant-dipole interactions are also included. For values of the internuclear distance R large enough so that only Coulombic interactions in R 03 are nonnegligible, the variation with R of the long-range energy is seen to be different from the usually assumed C 3 /R 3 form. Present formulas can be used both to predict accurately long-range energies and to fit experimental energies now available in such long-range of R from photoassociative spectroscopy. As an example, they have been used, together with more accurate values of C n coefficients than those used some 10 years ago, to predict again the three states of Rb 2 displaying structures (well and barrier) at long range, i.e., 0 0 g (3/2), 1 u (3/2), and 1 u (1/2).