An analytical theory of the optical transitions of a molecule bound at the surface of a 4He droplet is developed for the case of a strong softening of the excited-state nearest neighbor dynamics. The optical bandwidth is found to be determined by the zero-point kinetic energy released at the transition. The theory is applied to the triplet-triplet optical transition in Na2 molecule, for which an asymmetric vibronic band with no pronounced zero-phonon line is predicted, in good agreement with the experiment. © 2009 EDP Sciences, SIF, Springer-Verlag.
Hizhnyakov, V., Tehver, I., Benedek, G. (2009). Theory of the optical spectrum of Na2 on He4 droplets: effects of the zero-point energy of the nearest atoms. THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 70(4), 507-512 [10.1140/epjb/e2009-00277-1].
Theory of the optical spectrum of Na2 on He4 droplets: effects of the zero-point energy of the nearest atoms
BENEDEK, GIORGIO
2009
Abstract
An analytical theory of the optical transitions of a molecule bound at the surface of a 4He droplet is developed for the case of a strong softening of the excited-state nearest neighbor dynamics. The optical bandwidth is found to be determined by the zero-point kinetic energy released at the transition. The theory is applied to the triplet-triplet optical transition in Na2 molecule, for which an asymmetric vibronic band with no pronounced zero-phonon line is predicted, in good agreement with the experiment. © 2009 EDP Sciences, SIF, Springer-Verlag.
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