Fission half-lives of super-heavy nuclei in a microscopic approach

Details Fission half-lives of super-heavy nuclei in a microscopic approach Fission half-lives of super-heavy nuclei in a microscopic approach

2012-04-26

arxiv.org/abs/1204.5867v1

Physics

Nuclear Physics

Nuclear Theory

26 pages, 15 figures

Scientific paper

A systematic study of 160 heavy and super-heavy nuclei is performed in the Hartree-Fock-Bogoliubov approach with the finite range and density dependent Gogny force with the D1S parameter set. We show calculations in several approximations: with axially symmetric and reflexion symmetric wave functions, with axially symmetric and non-reflexion symmetric wave functions and finally some representative examples with triaxial wave functions are also discussed. Relevant properties of the ground state and along the fission path are thoroughly analyzed. Fission barriers, Q$_\alpha$-factors and lifetimes with respect to fission and $\alpha$-decay as well as other observables are discussed. Larger configuration spaces and more general HFB wave functions as compared to previous studies provide a very good agreement with the experimental data.

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