Fission barriers for Po nuclei produced in complete fusion reactions with heavy ions | Zendy

R. N. Sagaidak | Zendy; A. N. Andreyev | Zendy

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Fission barriers for Po nuclei produced in complete fusion reactions with heavy ions

Author(s) -

R. N. Sagaidak,

A. N. Andreyev

Publication year - 2009

Publication title -

physical review c

Language(s) - English

Resource type - Journals

eISSN - 1089-490X

pISSN - 0556-2813

DOI - 10.1103/physrevc.79.054613

Subject(s) - fission , nuclear fusion , nuclear physics , excitation , physics , semi empirical mass formula , nuclear reaction , neutron , fusion , atomic physics , ion , nucleus , evaporation , heavy ion , neutron emission , drop (telecommunication) , thermodynamics , biology , microbiology and biotechnology , linguistics , philosophy , quantum mechanics , telecommunications , computer science

Evaporation residues and fission excitation functions obtained in complete fusion reactions leading to Po compound nuclei have been analyzed in the framework of the standard statistical model. Macroscopic fission barriers deduced from the cross-section data analysis are compared with the predictions of various theoretical models and available data. A drop in the Po barriers with the decrease in a neutron number was found, which is stronger than predicted by any theory. The presence of entrance channel effects and collective excitations in the compound nucleus decay is considered as a possible reason for the barrier reduction.status: publishe

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