Abstract
Evidence for the influence of reaction dynamics on the population of compound nuclei will be presented. Large dissipation in certain heavy-ion reactions leads to long compound nucleus formation times which can change the initial angular momentum and excitation energy distribution of the compound nucleus. This effect can be observed by measuring high energy γ-rays from the giant dipole resonance. The overall neutron multiplicity, however, is not a sensitive observable. The long formation times might even influence the final spin distribution of evaporation residues, which could possibly explain the entrance channel dependent population of superdeformed bands.
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