Strong enhancement of level densities in the crossover from spherical to deformed neodymium isotopes

Basit Öğe Kaydı
dc.authoridDahl-Jacobsen, Thomas/0000-0003-3760-6631
dc.authoridSahin, Eda/0000-0003-0683-5140
dc.authoridIngeberg, Vetle Wegner/0000-0001-8086-6485
dc.authoridGuttormsen, Magne Sveen/0000-0002-8681-1044
dc.authoridBello Garrote, Frank Leonel/0000-0003-3926-7119
dc.authoridRyssens, Wouter/0000-0002-4775-4403
dc.authoridZeiser, Fabio/0000-0001-6327-9107
dc.contributor.authorGuttormsen, M.
dc.contributor.authorAlhassid, Y.
dc.contributor.authorRyssens, W.
dc.contributor.authorAy, K. O.
dc.contributor.authorOzgur, M.
dc.contributor.authorAlgin, E.
dc.contributor.authorLarsen, A. C.
dc.date.accessioned2025-01-06T17:43:48Z
dc.date.available2025-01-06T17:43:48Z
dc.date.issued2021
dc.description.abstractUnderstanding the evolution of level densities in the crossover from spherical to well-deformed nuclei has been a long-standing problem in nuclear physics. We measure nuclear level densities for a chain of neodymium isotopes Nd-142,Nd-144-151 which exhibit such a crossover. These results represent the most complete data set of nuclear level densities to date for an isotopic chain between neutron shell-closure and towards mid-shell. We observe a strong increase of the level densities along the chain with an overall increase by a factor of approximate to 150at an excitation energy of 6 MeV and saturation around mass 150. Level densities calculated by the shell model Monte Carlo (SMMC) are in excellent agreement with these experimental results. Based on our experimental and theoretical findings, we offer an explanation of the observed mass dependence of the level densities in terms of the intrinsic single-particle level density and the collective enhancement. (C) 2021 The Author(s). Published by Elsevier B.V.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [115F196]; European Research Council [637686]; ChETEC COST Action - COST (European Cooperation in Science and Technology) [CA16117]; National Science Foundation [PHY-1430152, OISE-1927130]; U.S. DOE grant [DE-SC0019521]; Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]; Norwegian Research Council [263030, 262952, 245882]; European Research Council (ERC) [637686] Funding Source: European Research Council (ERC); U.S. Department of Energy (DOE) [DE-SC0019521] Funding Source: U.S. Department of Energy (DOE)
dc.description.sponsorshipWe thank J.C. Muller, P. Sobas and J. Wikne for providing excellent experimental conditions. This work is supported by The Scientific and Technological Research Council of Turkey (TUBITAK) with project number 115F196. A.C.L. acknowledges funding of this research by the European Research Council through ERC-STG-2014, grant agreement no. 637686. A.C.L. acknowledges support from the ChETEC COST Action (CA16117), supported by COST (European Cooperation in Science and Technology). This work benefited from support by the National Science Foundation under Grant No. PHY-1430152 (JINA Center for the Evolution of the Elements). This work was supported in part by the National Science Foundation under Grant No. OISE-1927130 (IReNA). The work of Y.A. and W.R. was supported in part by the U.S. DOE grant No. DE-SC0019521. The SMMC calculations used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We also thank the Yale Center for Research Computing for guidance and use of the research computing infrastructure. This work was partially supported by projects 263030 and 262952 of the Norwegian Research Council. The OSCAR detector was funded by the Norwegian Research Council project 245882.
dc.identifier.doi10.1016/j.physletb.2021.136206
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.scopus2-s2.0-85102996965
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2021.136206
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2809
dc.identifier.volume816
dc.identifier.wosWOS:000647421500005
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysics Letters B
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectNuclear level density
dc.subjectOslo method
dc.subjectShell model Monte Carlo
dc.subjectMean-field theory
dc.subjectCollective enhancement
dc.titleStrong enhancement of level densities in the crossover from spherical to deformed neodymium isotopes
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu