Abstract
A survey is presented of experiments dealing with the oscillatory structure of outershell excitation functions in atomic collisions. Special attention is given to the intermediate and high-energy range. Oscillations in total excitation cross section functions are shown to be a rather widespread phenomenon; they have been observed for a wide variety of collision systems over an energy range extending from threshold to 1 MeV. From a qualitative point of view the oscillatory structure of excitation functions may be explained by a quantum mechanical interference effect as a consequence of the mixing of coherently excited molecular states at large internuclear distance. The applicability of this model to low-energy collisions is generally accepted. New results at intermediate and high impact energies, however, indicate that a refinement of this model or even an entirely new approach is necessary in order to explain the observed effects.
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Hasselkamp, D., Scharmann, A., Schartner, KH. (1980). Oscillatory Structure of Excitation Functions in Atomic Collisions. In: Kleinpoppen, H., Williams, J.F. (eds) Coherence and Correlation in Atomic Collisions. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2997-8_42
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