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- W2050797816 abstract "The rotational-sudden approximation (IOSA) has been applied to He-HF scattering at intermediate energies by using an ab initio computed potential-energy surface which explicitly included the dependence on the internal molecular coordinate. The vibrational degree of freedom has therefore been treated exactly by solving the coupled radial equations that were obtained after expanding the target vibrations over a large number of HO wavefunctions. The radial behaviour of the computed coupling matrix elements between lower-lying target states is analyzed at various relative orientations of the atom-to-target vector with respect to the molecular bond. The present results clearly show that the coupling strength and range can be directly related to the specific anisotropic behaviour of the potential surface and to the varying efficiency of (V, T) coupling as the He atom probes different molecular regions. The computed relaxation times are compared with experiments at various temperatures and with previous calculations performed via different surfaces and dynamical models and show satisfactory agreement with observations, thus markedly improving the quality of earlier computed cross sections." @default.
- W2050797816 created "2016-06-24" @default.
- W2050797816 creator A5061199333 @default.
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- W2050797816 date "1983-07-01" @default.
- W2050797816 modified "2023-09-27" @default.
- W2050797816 title "He-HF vibrational inelasticity at low and intermediate energies from quantum collision theory" @default.
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- W2050797816 doi "https://doi.org/10.1016/0301-0104(83)87009-8" @default.
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