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The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus Sb-133

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dc.contributor.authorFraile Prieto, Luis Mario
dc.contributor.authorMach, H.
dc.contributor.authorOlaizola, B.
dc.contributor.authorPaziy, V.
dc.contributor.authorVedia Fernández, María Victoria
dc.date.accessioned2023-06-17T23:53:55Z
dc.date.available2023-06-17T23:53:55Z
dc.date.issued2016-09-10
dc.description© 2016 The Authors. Published by Elsevier B.V. Artículo publicado por más de 10 autores. The authors thank the technical services of the ILL, LPSC and GANIL for supporting the EXILL campaign. The EXOGAM collaboration and the INFN Legnaro are acknowledged for the loan of Ge detectors. This work was supported by the Italian Istituto Nazionale di Fisica Nucleare, by the Polish National Science Centre under Contract Nos. 2014/14/M/ST2/00738 and 2013/08/M/ST2/00257, by the UK Science and Technology Facilities Council and the UK National Measurement Office. Supports from the German BMBF (contract No. 05P12RDNUP), the Spanish MINECO FPA2013-41267-P and NuPNET-FATIMA (PRI-PIMNUP-2011-1338) are also acknowledged.
dc.description.abstractThe gamma-ray decay of excited states of the one-valence-proton nucleus Sb-133 has been studied using cold-neutron induced fission of U-235 and Pu-241 targets, during the EXILL campaign at the ILL reactor in Grenoble. By using a highly efficient HPGe array, coincidences between gamma-rays prompt with the fission event and those delayed up to several tens of microseconds were investigated, allowing to observe, for the first time, high-spin excited states above the 16.6 mu s isomer. Lifetimes analysis, performed by fast-timing techniques with LaBr3(Ce) scintillators, revealed a difference of almost two orders of magnitude in B(M1) strength for transitions between positive-parity medium-spin yrast states. The data are interpreted by a newly developed microscopic model which takes into account couplings between core excitations (both collective and non-collective) of the doubly magic nucleus Sn-132 and the valence proton, using Skyrme effective interaction in a consistent way. The results point to a fast change in the nature of particle-core excitations with increasing spin. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipItalian Istituto Nazionale di Fisica Nucleare
dc.description.sponsorshipPolish National Science Centre
dc.description.sponsorshipUK Science and Technology Facilities Council
dc.description.sponsorshipUK National Measurement Office
dc.description.sponsorshipGerman BMBF
dc.description.sponsorshipNuPNET-FATIMA
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/39723
dc.identifier.doi10.1016/j.physletb.2016.06.065
dc.identifier.issn0370-2693
dc.identifier.officialurlhttp://dx.doi.org/10.1016/j.physletb.2016.06.065
dc.identifier.relatedurlhttp://www.sciencedirect.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/18988
dc.journal.titlePhysics letters B
dc.language.isoeng
dc.page.final278
dc.page.initial273
dc.publisherElsevier science
dc.relation.projectIDFPA2013-41267-P
dc.relation.projectID2014/14/M/ST2/00738
dc.relation.projectID2013/08/M/ST2/00257
dc.relation.projectID05P12RDNUP
dc.relation.projectIDRI-PIMNUP-2011-1338
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu539.1
dc.subject.keywordExcited states
dc.subject.keywordGamma ray
dc.subject.keywordOctupole
dc.subject.keywordSpectrometer
dc.subject.keywordIsomer
dc.subject.keywordArray.
dc.subject.ucmFísica nuclear
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleThe mutable nature of particle-core excitations with spin in the one-valence-proton nucleus Sb-133
dc.typejournal article
dc.volume.number760
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