Heat capacity and pairing transition in nuclei
M. Guttormsen, M. Hjorth-Jensen, E. Melby, J. Rekstad, A. Schiller, S. Siem
Abstract
A simple model based on the canonical-ensemble theory is outlined for hot nuclei. The properties of the model are discussed with respect to the Fermi gas model and the breaking of Cooper pairs. The model describes well the experimental level density of deformed nuclei in various mass regions. The origin of the so-called S-shape of the heat capacity curve Cv(T) is discussed.
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