Entropy-driven excitation-energy sorting in superfluid fission dynamics

Details Entropy-driven excitation-energy sorting in superfluid fission dynamics Entropy-driven excitation-energy sorting in superfluid fission dynamics

2009-12-18

arxiv.org/abs/0912.3651v1

Phys. Rev. Lett.104:212501, 2010

Physics

Nuclear Physics

Nuclear Theory

5 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.104.212501

We study the consequences of the constant-temperature behaviour of nuclei in the superfluid regime for the exchange of excitation energy between two nuclei in thermal contact. This situation is realized at the scission configuration of fission at moderate excitation energies. It is shown that all available excitation energy is transferred to the colder fragment. This effect explains why an increase of excitation energy is translated into an increase of the number of emitted neutrons for the heavy fission fragments only. This observation remained unexplained up to now.

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