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Abstract
Calculations are presented for the vibrational states of
on a potential with the correct dissociation properties (Molec. Phys., 98, 261 (2000)) using both Radau and Jacobi coordinates. This potential is found to support horseshoe states at low to intermediate energies. Near the dissociation limit a new class of long-range states, called asymptotic vibrational states (AVS), is found. These states are similar to those suggested to explain the observed near-dissociation spectrum of
. The possible consequences of such states are discussed.
Keywords:
Acknowledgements
The authors take pleasure in acknowledging many discussions with Mark Child over many years (decades?) on the near-dissociation spectrum of
and other topics. This article is dedicated to him and they hope he enjoys it. The authors are also grateful to Tania Monteiro for advice on the classical trajectory calculations and Paolo Barletta for helpful discussions. This work was performed as part of EPSRC's ChemReact computing consortium.
