Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-03-24
J.Phys.Conf.Ser.282:012010,2011
Physics
Nuclear Physics
Nuclear Theory
20 pages, 16 figures, Contribution to the International Symposium on Quasifission Process in Heavy Ion Reactions, 8-9 November
Scientific paper
10.1088/1742-6596/282/1/012010
A variety of phenomena connected with the formation of a dinuclear complex is observed in the heavy ion collisions at low energies. The dinuclear system model allows us to analyze the experimental data and to interpret them by comparison of the partial capture, fusion and evaporation residue cross sections measured for the different reactions leading to the same compound nucleus. The comparison of theoretical and experimental values of the mass and angular distributions of the reaction products gives us a detailed information about reaction mechanism forming the observed yields. The observed very small cross sections of the evaporation residues may be explained by the strong fusion hindrance and/or instability of the heated and rotating compound nucleus and smallness of its survival probability. The fusion hindrance arises due to competition between complete fusion and quasifission while the smallness of survival probability is connected with the decrease of the fission barrier at large excitation energy and angular momentum of compound nucleus.
Giardina Giorgio
Mandaglio Giuseppe
Manganaro Marina
Nasirov Avazbek K.
Scheid Werner
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