Potential energy surfaces of superheavy nuclei

  • We investigate the structure of the potential energy surfaces of the superheavy nuclei 158258Fm100, 156264Hs108, 166278112, 184298114, and 172292120 within the framework of self-consistent nuclear models, i.e., the Skyrme-Hartree-Fock approach and the relativistic mean-field model. We compare results obtained with one representative parametrization of each model which is successful in describing superheavy nuclei. We find systematic changes as compared to the potential energy surfaces of heavy nuclei in the uranium region: there is no sufficiently stable fission isomer any more, the importance of triaxial configurations to lower the first barrier fades away, and asymmetric fission paths compete down to rather small deformation. Comparing the two models, it turns out that the relativistic mean-field model gives generally smaller fission barriers.

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Metadaten
Author:Michael BenderORCiDGND, Klemens Rutz, Paul-Gerhard Reinhard, Joachim MaruhnORCiDGND, Walter GreinerGND
URN:urn:nbn:de:hebis:30-30218
Parent Title (German):Physical Review. C
Document Type:Article
Language:English
Date of Publication (online):2006/07/14
Year of first Publication:1998
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/14
Volume:58
Issue:4
Page Number:7
First Page:2126
Last Page:2132
Source:Physical Review C 58(4), S. 2126-2132 (1998), ©1998 The American Physical Society, http://link.aps.org/abstract/PRC/v58/p2126
HeBIS-PPN:266053858
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification:20.00.00 NUCLEAR PHYSICS / 21.00.00 Nuclear structure (for nucleon structure, see 14.20.Dh Properties of protons and neutrons; 13.40.-f for electromagnetic processes and properties; 13.60.Hb for deep-inelastic structure functions) / 21.30.-x Nuclear forces (see also 13.75.Cs Nucleon-nucleon interactions) / 21.30.Fe Forces in hadronic systems and effective interactions
20.00.00 NUCLEAR PHYSICS / 21.00.00 Nuclear structure (for nucleon structure, see 14.20.Dh Properties of protons and neutrons; 13.40.-f for electromagnetic processes and properties; 13.60.Hb for deep-inelastic structure functions) / 21.60.-n Nuclear structure models and methods / 21.60.Jz Nuclear Density Functional Theory and extensions (includes Hartree-Fock and random-phase approximations)
20.00.00 NUCLEAR PHYSICS / 24.00.00 Nuclear reactions: general / 24.10.-i Nuclear reaction models and methods / 24.10.Jv Relativistic models
20.00.00 NUCLEAR PHYSICS / 27.00.00 Properties of specific nuclei listed by mass ranges (an additional heading must be chosen with these entries, where the given mass number limits are, to some degree, arbitrary) / 27.90.+b A (greater-than-or-equal-to) 220
Licence (German):License LogoDeutsches Urheberrecht