Shapes describing the alpha decay, cluster radioactivity, fusion, fission and fragmentation phenomena

Generalized Liquid Drop Model and Fission, Fusion, Alpha and Cluster Radioactivity and Superheavy Nuclei

A particular version of the liquid drop model taking into account both the mass and charge asymmetries, the proximity energy, the rotational energy, the shell and pairing energies and the temperature has been developed to describe smoothly the transition between one and two-body shapes in entrance and exit channels of nuclear reactions. In the quasi-molecular shape valley where the proximity en...

Cold fission as cluster decay with dissipation.

For cold ~neutronless! fission we consider an analytical model of quantum tunneling with dissipation through a barrier U(q) evaluated with a M3Y nucleon-nucleon force. We calculate the tunneling spectrum, i.e., the fission rate as a function of the total kinetic energy of the fragments. The theoretical results are compared with the experimental data obtained for the fine structure of two cold f...

Fission and ternary cluster decay of hyper - deformed 56 Ni

Coincidences between two heavy fragments have been measured from the fission of Ni compound nuclei formed in the S + Mg reaction at Elab( S) = 165.4 MeV. A unique experimental set-up consisting of two large-area position-sensitive (x, y) gas detector telescopes has been used allowing the complete determination of the observed fragments and their momentum vectors. In addition to binary fission e...

Predation Risk Shapes Social Networks in Fission-Fusion Populations

Predation risk is often associated with group formation in prey, but recent advances in methods for analysing the social structure of animal societies make it possible to quantify the effects of risk on the complex dynamics of spatial and temporal organisation. In this paper we use social network analysis to investigate the impact of variation in predation risk on the social structure of guppy ...

FORMATION OF NUCLEAR MOLECULES IN CLUSTER RADIOACTIVITY On Interpretation of the Cluster Radioactivity Mechanism