Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 66: Structure and Dynamics of Nuclei 13

HK 66.1: Vortrag

Donnerstag, 26. März 2015, 17:00–17:15, T/SR19

Microscopic description of nuclear fission properties in the superheavy region — •Samuel Andrea Giuliani^1,2, Gabriel Martinez-Pinedo¹, and Luis Miguel Robledo² — ¹Institut für Kernphysik (Theoriezentrum), Technische Universität Darmstadt, Schlossgartenstraße 2, 64289 Darmstadt, Germany — ²Departamento de Física Teorica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain

In previous studies the fission properties of the Barcelona-Catania-Paris-Madrid energy-density functional were compared with available experimental data. Given its encouraging results, we explored the fission properties of nuclei in the superheavy region (92 ≤ Z ≤ 120 and 158 ≤ N ≤ 202). Potential energy surfaces as well as collective inertias relevant to the fission process are obtained within a mean-field approach. Spontaneous fission half-lives are computed using the semiclassical Wentzel-Kramers-Brillouin formalism. As tracks of possible magic numbers in the superheavy region, combinations of neutron and proton number leading to an enhanced stability against the spontaneous fission process are discussed. The agreement with other theoretical models is also studied. This work was supported by the Helmholtz Association through the Nuclear Astrophysics Virtual Institute (VH-VI-417) and the Bundesministerium für Bildung und Forschung (BMBF) No. 06DA7047I