Abstract
The mass dependence of the critical excitation energy above which a hot nucleus does not decay any more by particle evaporation, has been studied in the mass range 75≦A≦130. The experimental values of the critical excitation energy have been obtained by means of a new integral method based on the analysis of the widths of the evaporation residue mass distributions as a function of the residue velocity. The obtained mass dependence appears to be stronger than expected by various models and a predicted dependence on theZ/A ratio of the decaying nucleus seems to be confirmed.
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Supported by the European Community programme “Human Capital and Mobility”
The present work is part of the Doctoral Thesis of S. Proschitzki
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Bohne, W., Figuera, P., Morgenstern, H. et al. Limiting excitation energies in fusion evaporation reactions. Z. Physik A - Hadrons and Nuclei 347, 135–143 (1993). https://doi.org/10.1007/BF01284680
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DOI: https://doi.org/10.1007/BF01284680