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Generalized-seniority pattern and thermal properties in even Sn isotopes
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.ORCID iD: 0000-0002-1406-5695
2016 (English)In: PHYSICAL REVIEW C, ISSN 2469-9985, Vol. 94, no 4, 044312Article in journal (Refereed) Published
Abstract [en]

Even tin isotopes of mass number A = 108-124 are calculated with realistic interactions in the generalized-seniority approximation of the nuclear shell model. For each nucleus, we compute the lowest 10 000 states (5000 of each parity) up to around 8 MeV in excitation energy, by allowing as many as four broken pairs. The lowest 50 eigen energies of each parity are compared with the exact results of the large-scale shell-model calculation. The wave functions of the midshell nuclei show a clear pattern of the stepwise breakup of condensed coherent pairs with increasing excitation energy. We also compute in the canonical ensemble the thermal properties-level density, entropy, and specific heat-in relation to the thermal pairing phase transition.

Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 94, no 4, 044312
Keyword [en]
Nuclear Shell-Model, Tin Isotopes, Level Densities, Approximation, Transitions
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-196608DOI: 10.1103/PhysRevC.94.044312ISI: 000386170000002ScopusID: 2-s2.0-84991671465OAI: oai:DiVA.org:kth-196608DiVA: diva2:1047680
Funder
Swedish Research Council, 621-2012-3805 621-2013-4323
Note

QC 20161118

Available from: 2016-11-18 Created: 2016-11-17 Last updated: 2016-11-18Bibliographically approved

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