PMID: 9535685Apr 16, 1998Paper

Analytical Formulas for Long-Range Energies of the 16 Omega(+/-)g,u States of Alkali Dimers Dissociating into M(ns) + M(np 2PJ)

Journal of Molecular Spectroscopy
M Aubert-FréconS Rousseau

Abstract

Analytical formulas for long-range energies of the 16 Omega(+/-)g,u states of alkali dimers dissociating into M(ns) + M(np 2PJ) are displayed in terms of the long-range Cn coefficients for the 2S+1Lambda(+)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-3 are nonnegligible, the variation with R of the long-range energy is seen to be different from the usually assumed C3/R3 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 Cn coefficients than those used some 10 years ago, to predict again the three states of Rb2 displaying structures (well and barrier) at long range, i.e., 0(-)g(3/2), 1u(3/2), and 1u(1/2). Copyright 1998 Academic Press.

Citations

Jul 2, 2010·The Journal of Chemical Physics·Warren T ZemkeWilliam C Stwalley
Mar 5, 2010·The Journal of Physical Chemistry. a·Richard J PlowrightW H Breckenridge

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