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Potential energy surfaces are calculated in the elongation-asymmetry plane, with nuclear shapes ranging from sphericity to very large deformations, using the Hartree-Fock-Bogoliubov method and the Gogny nucleon-nucleon effective interaction (parameterization D1S), for the 226Th and 256,258,260Fm Fissioning systems. In order to discriminate between pre- and post-scission configurations, we define a criterion based on the nuclear density. Using this criterion, a big number of scission configurations are identified, and several fragment properties are extracted from them, namely fragment deformations, deformation energies, energy partitioning, neutron binding energies at scission, charge polarization, total fragment kinetic energies and neutron emission multiplicities. [ABSTRACT FROM AUTHOR]

Microscopic results on fission barriers, partial γ-back and fission lifetimes of shape isomers are presented. They have been obtained from mean-field and beyond mean-field calculations using the effective D1S Gogny force. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

We present preliminary results for the fission properties of odd mass nuclei obtained in the framework of the mean field approximation with the equal filling approximation to handle the unpaired odd nucleon. In the calculations the Gogny force with the D1S parameterization has been used. The results for the nucleus 235U are discussed and the hindrance factor for the spontaneous fission half life is partially attributed to the reduction of pairing correlations. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Cluster radioactivity is microscopically described using the mean field approach with the effective phenomenological Gogny interaction. As driving coordinate the axially symmetric octupole moment is used. Owing to the microscopic approach used, it is possible to compute collective masses consistently and therefore it is also possible to compute spontaneous emission half lives. The present approach has been applied to the cluster radioactivity emission in 226Ra and the results for the half lives and other quantities agree well with experiment. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

The increasing need for nuclear data far from the valley of stability requires information on nuclei which cannot be accessed experimentally or for which almost no experimental data is known. Consequently, the use of microscopic approaches to predict properties of such poorly known nuclei is necessary as a first step to improve our understanding of nuclear reaction on exotic nuclei. Within this context, large scale axial mean field calculations from proton to neutron drip-lines have been performed using the Hartree-Fock-Bogoliubov method based on the DIS Gogny nucleon-nucleon effective interaction. Nearly 7000 nuclei have been studied under the axial symmetry hypothesis and several properties are now available for the nuclear scientific community on an Internet web site for every individual nucleus. [ABSTRACT FROM AUTHOR]