Role of the higher static deformations of fragments in the cold binary fission of 252Cf

We study the binary cold fission of 252Cf in the frame of a cluster model where the fragments are born to their respective ground states and interact via a double-folded potential with deformation effects taken into acco
We study the binary cold fission of 252Cf in the frame of a cluster model where the fragments are born to their respective ground states and interact via a double-folded potential with deformation effects taken into account up to multipolarity lambda=4. The preformation factors were neglected. In the case when the fragments are assumed to be spherical or with ground-state quadrupole deformation, the Q-value principle dictates the occurrence of a narrow region around the double magic 132Sn, like in the case of cluster radioactivity. When the hexadecupole deformation is turned on, an entire mass region of cold fission in the range 138–156 for the heavy fragment arise, in agreement with the experimental observations. This fact suggests that in the above-mentioned mass region, contrary to the usual cluster radioactivity where the daughter nucleus is always a neutron/proton (or both) closed shell or nearly closed shell spherical nucleus, the clusterization mechanism seems to be strongly influenced by the hexadecupole deformations rather than the Q value.
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Metadaten
Author:Aurel Săndulescu, Serban Misicu, Florin Carstoiu, A. Florescu, Walter Greiner
URN:urn:nbn:de:hebis:30-30205
Document Type:Article
Language:English
Date of Publication (online):2006/07/14
Year of first Publication:1998
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2006/07/14
Source:Physical Review C 57(5), S. 2321-2328 (1998), ©1998 The American Physical Society, http://link.aps.org/abstract/PRC/v57/p2321
HeBIS PPN:266050271
Institutes:Physik
Dewey Decimal Classification:530 Physik
PACS-Classification:21.60.Gx Cluster models
23.70.+j Heavy-particle decay
25.85.Ca Spontaneous fission
27.90.+b A (greater-than-or-equal-to) 220
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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