Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines nucl-th
Date Mercredi 16 Janvier 2019
Heure 11:30
Institut IPN
Salle Bâtiment 100, Salle A015
Nom de l'orateur Zdeb
Prenom de l'orateur Anna
Addresse email de l'orateur
Institution de l'orateur CEA
Titre Cluster radioactivity of super-heavy nuclei.
Résumé An exotic type of decay - cluster emission - was observed in actinides region in 1980's [1, 2, 3]. In this process a light nucleus, but heavier then alpha particle is emitted, while the heavy mass residue is close to doubly magic lead in all observed cases. Microscopic description of this phenomenon treated as a very asymmetric fission has been successfully performed within HFB model with Gogny interactions D1S [4]. The fission valley on the potential energy surface has been found and fission fragments have been identified as cluster radioactivity products. Recently the characteristic very asymmetric fission valleys have been also found in some super-heavy nuclei. It has been shown that cluster radioactivity plays a nonnegligible role in this part of nuclear chart [5].\newline [1] H. J. Rose and G. A. Jones, Nature (London) 307, 245 (1984).\newline [2] A. Sandulescu, D. N. Poenaru, and W. Greiner, Sov. J. Part. Nucl. 11, 528 (1980).\newline [3] R. Bonetti and A. Guglielmetti, in Heavy Elements and Related Phe- nomena, Vol. II, edited by W. Greiner and R. K. Gupta (World Scientific, Singapore, 1999), p. 643.\newline [4] M. Warda, J.M. Robledo, Phys. Rev. C 84, 044608 (2011).\newline [5] M. Warda, A. Zdeb, L.M. Robledo, arXiv:1807.00342
Numéro de preprint arXiv
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