Journal Article

GSI-2014-00561

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fission properties for r-process nuclei

Erler, J. (Corresponding author) ; Langanke, K.GSI* ; Loens, H. P.GSI* ; Martínez-Pinedo, G.GSI* ; Reinhard, P.-G.

2012
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevC.85.025802

Abstract: We present a systematics of fission barriers and fission lifetimes for the whole landscape of super-heavy elements (SHE), i.e. nuclei with Z>100. The fission lifetimes are also compared with the α-decay half-lives. The survey is based on a self-consistent description in terms of the Skyrme-Hartree-Fock (SHF) approach. Results for various different SHF parameterizations are compared to explore the robustness of the predictions. The fission path is computed by quadrupole constrained SHF. The computation of fission lifetimes takes care of the crucial ingredients of the large-amplitude collective dynamics along the fission path, as self-consistent collective mass and proper quantum corrections. We discuss the different topologies of fission landscapes which occur in the realm of SHE (symmetric versus asymmetric fission, regions of triaxial fission, bi-modal fission, and the impact of asymmetric ground states). The explored region is extended deep into the regime of very neutron-rich isotopes as they are expected to be produced in the astrophysical r process.

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Contributing Institute(s):

1. Theorie (THE)

Research Program(s):

1. 533 - Exotic Nuclei and Nuclear Astrophysics (ENNA) (POF2-533) (POF2-533)

Appears in the scientific report 2012

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Database coverage:
; Current Contents - Social and Behavioral Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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