Abstract
From a quantum mechanical model for quasielastic nuclear scattering, involving a pocket in the internuclear potential, we derive a distribution of nuclear delay times. We show that coherent excitation of states in a rotational band of nuclear resonances leads to a lighthouse effect in the nuclear scattering cross section. Its influence on atomic excitations is shortly discussed for the case of positron creation in supercritical heavy ion collisions.
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We thank U. Müller for providing us with the positron amplitudes (6) used in the computation of Fig. 3. This work was supported by the Deutsche Forschungsgemeinschaft (DFG) and by the Gesellschaft für Schwerionenforschung (GSI).
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Heinz, U., Reinhardt, J., Müller, B. et al. Nuclear time delay in resonant heavy ion collisions. Z Physik A 316, 341–344 (1984). https://doi.org/10.1007/BF01439906
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DOI: https://doi.org/10.1007/BF01439906