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dc.contributor.authorValencia, E.
dc.contributor.authorTain, J. L.
dc.contributor.authorAlgora, A.
dc.contributor.authorAgramunt, J.
dc.contributor.authorEstevez, E.
dc.contributor.authorJordan, M. D.
dc.contributor.authorRubio, B.
dc.contributor.authorRice, S.
dc.contributor.authorRegan, P.
dc.contributor.authorGelletly, W.
dc.contributor.authorPodolyák, Z.
dc.contributor.authorBowry, M.
dc.contributor.authorMason, P.
dc.contributor.authorFarrelly, G. F.
dc.contributor.authorZakari-Issoufou, A.
dc.contributor.authorFallot, M.
dc.contributor.authorPorta, A.
dc.contributor.authorBui, V. M.
dc.contributor.authorRissanen, Juho
dc.contributor.authorEronen, Tommi
dc.contributor.authorMoore, Iain
dc.contributor.authorPenttilä, Heikki
dc.contributor.authorÄystö, Juha
dc.contributor.authorElomaa, Viki-Veikko
dc.contributor.authorHakala, Jani
dc.contributor.authorJokinen, Ari
dc.contributor.authorKolhinen, Veli
dc.contributor.authorReponen, Mikael
dc.contributor.authorSonnenschein, Volker
dc.contributor.authorCano-Ott, D.
dc.contributor.authorGarcia, A. R.
dc.contributor.authorMartínez, T.
dc.contributor.authorMendoza, E.
dc.contributor.authorCaballero-Folch, R.
dc.contributor.authorGomez-Hornillos, B.
dc.contributor.authorGorlichev, V.
dc.contributor.authorKondev, F. G.
dc.contributor.authorSonzogni, A. A.
dc.contributor.authorBatist, L.
dc.date.accessioned2017-04-27T06:23:40Z
dc.date.available2017-04-27T06:23:40Z
dc.date.issued2017
dc.identifier.citationValencia, E., Tain, J. L., Algora, A., Agramunt, J., Estevez, E., Jordan, M. D., . . . Batist, L. (2017). Total absorption γ-ray spectroscopy of the β-delayed neutron emitters 87Br, 88Br, and 94Rb. <em>Physical Review C</em>, 95 (2), 024320. <a href="https://doi.org/10.1103/PhysRevC.95.024320">doi:10.1103/PhysRevC.95.024320</a>
dc.identifier.otherTUTKAID_73472
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/53703
dc.description.abstractWe investigate the decay of 87,88Br and 94Rb using total absorption γ -ray spectroscopy. These important fission products are β-delayed neutron emitters. Our data show considerable βγ intensity, so far unobserved in high-resolution γ -ray spectroscopy, from states at high excitation energy. We also find significant differences with the β intensity that can be deduced from existing measurements of the β spectrum. We evaluate the impact of the present data on reactor decay heat using summation calculations. Although the effect is relatively small it helps to reduce the discrepancy between calculations and integral measurements of the photon component for 235U fission at cooling times in the range 1–100 s. We also use summation calculations to evaluate the impact of present data on reactor antineutrino spectra. We find a significant effect at antineutrino energies in the range of 5 to 9 MeV. In addition, we observe an unexpected strong probability for γ emission from neutron unbound states populated in the daughter nucleus. The γ branching is compared to Hauser-Feshbach calculations, which allow one to explain the large value for bromine isotopes as due to nuclear structure. However the branching for 94Rb, although much smaller, hints of the need to increase the radiative width γ by one order of magnitude. This increase in γ would lead to a similar increase in the calculated (n,γ ) cross section for this very neutron-rich nucleus with a potential impact on r process abundance calculations.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherneutron emission
dc.subject.otherbeta decay
dc.subject.otherbromine
dc.subject.otherrubidium
dc.subject.othertotal absorption gamma-ray spectroscopy
dc.titleTotal absorption γ-ray spectroscopy of the β-delayed neutron emitters 87Br, 88Br, and 94Rb
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201704101956
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-04-10T15:15:07Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.volume95
dc.type.versionpublishedVersion
dc.rights.copyright© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.doi10.1103/PhysRevC.95.024320


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