Dynamics of hot rotating nuclei

The deexcitation of hot rotating nuclei is studied within a microscopic semiclassical transport formalism. This framework allows the study of the competition between the fission and evaporation channels of deexcitation, including the mean-field and two-body interactions, without shape constraint for...

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Bibliographic Details
Published in:Physics letters. B 1991-02, Vol.255 (3), p.311-315
Main Authors: Garcias, F., De La Mota, V., Remaud, B., Royer, G., Sébille, F.
Format: Article
Language:English
Subjects:
Nuclear Experiment
Physics
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Summary:The deexcitation of hot rotating nuclei is studied within a microscopic semiclassical transport formalism. This framework allows the study of the competition between the fission and evaporation channels of deexcitation, including the mean-field and two-body interactions, without shape constraint for the fission channel. As a function of initial angular momenta and excitation energies, the transitions between three regimes is analyzed [particle evaporation, binary (ternary) fussion and multifragmentation], which correspond to well-defined symmetry breakings in the inertia tensor of the system. The competition between evaporation and binary fission is studied, showing the progressive disappearance of the fission process with increasing excitation energies, up to a critical point where nuclei pass directly from evaporation to multifragmentation channels.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(91)90771-H