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dc.contributor.authorGuadilla, V.
dc.contributor.authorLe Meur, L.
dc.contributor.authorFallot, M.
dc.contributor.authorBriz, J. A.
dc.contributor.authorEstienne, M.
dc.contributor.authorGiot, L.
dc.contributor.authorPorta, A.
dc.contributor.authorCucoanes, A.
dc.contributor.authorShiba, T.
dc.contributor.authorZakari-Issoufou, A.-A.
dc.contributor.authorAlgora, A.
dc.contributor.authorTain, J. L.
dc.contributor.authorAgramunt, J.
dc.contributor.authorJordan, D.
dc.contributor.authorMonserrate, M.
dc.contributor.authorMontaner-Pizá, A.
dc.contributor.authorNácher, E.
dc.contributor.authorOrrigo, S. E. A.
dc.contributor.authorRubio, B.
dc.contributor.authorValencia, E.
dc.contributor.authorÄystö, J.
dc.contributor.authorEronen, T.
dc.contributor.authorGorelov, D.
dc.contributor.authorHakala, J.
dc.contributor.authorJokinen, A.
dc.contributor.authorKankainen, A.
dc.contributor.authorKolhinen, V.
dc.contributor.authorKoponen, J.
dc.contributor.authorMoore, I.
dc.contributor.authorPenttilä, H.
dc.contributor.authorPohjalainen, I.
dc.contributor.authorReinikainen, J.
dc.contributor.authorReponen, M.
dc.contributor.authorRinta-Antila, S.
dc.contributor.authorRytkönen, K.
dc.contributor.authorSonnenschein, V.
dc.contributor.authorVoss, A.
dc.contributor.authorFraile, L. M.
dc.contributor.authorVedia, V.
dc.contributor.authorGanioğlu, E.
dc.contributor.authorGelletly, W.
dc.contributor.authorLebois, M.
dc.contributor.authorWilson, J. N.
dc.contributor.authorMartinez, T.
dc.contributor.authorSonzogni, A. A.
dc.identifier.citationGuadilla, V., Le Meur, L., Fallot, M., Briz, J. A., Estienne, M., Giot, L., Porta, A., Cucoanes, A., Shiba, T., Zakari-Issoufou, A.-A., Algora, A., Tain, J. L., Agramunt, J., Jordan, D., Monserrate, M., Montaner-Pizá, A., Nácher, E., Orrigo, S. E. A., Rubio, B., . . . Sonzogni, A.A. (2022). Total absorption γ-ray spectroscopy of the β decays of 96gs,mY. <i>Physical Review C</i>, <i>106</i>(1), Article 014306. <a href="" target="_blank"></a>
dc.description.abstractThe β decays of the ground state (gs) and isomeric state (m) of 96Y have been studied with the total absorption γ-ray spectroscopy technique at the Ion Guide Isotope Separator On-Line facility. The separation of the 8+ isomeric state from the 0− ground state was achieved thanks to the purification capabilities of the JYFLTRAP double Penning trap system. The β-intensity distributions of both decays have been independently determined. In the analyses the deexcitation of the 1581.6 keV level in 96Zr, in which conversion electron emission competes with pair production, has been carefully considered and found to have significant impact on the β-detector efficiency, influencing the β-intensity distribution obtained. Our results for 96gsY (0−) confirm the large ground state to ground state β-intensity probability, although a slightly larger value than reported in previous studies was obtained, amounting to 96.6+0.3−2.1% of the total β intensity. Given that the decay of 96gsY is the second most important contributor to the reactor antineutrino spectrum between 5 and 7 MeV, the impact of the present results on reactor antineutrino summation calculations has been evaluated. In the decay of 96mY (8+), previously undetected β intensity in transitions to states above 6 MeV has been observed. This shows the importance of total absorption γ-ray spectroscopy measurements of β decays with highly fragmented deexcitation patterns. 96mY (8+) is a major contributor to reactor decay heat in uranium-plutonium and thorium-uranium fuels around 10 s after fission pulses, and the newly measured average β and γ energies differ significantly from the previous values in evaluated databases. The discrepancy is far above the previously quoted uncertainties. Finally, we also report on the successful implementation of an innovative total absorption γ-ray spectroscopy analysis of the module-multiplicity gated spectra, as a first proof of principle to distinguish between decaying states with very different spin-parity values.en
dc.publisherAmerican Physical Society (APS)
dc.relation.ispartofseriesPhysical Review C
dc.rightsIn Copyright
dc.subject.otherbeta decay
dc.subject.othernuclear structure and decays
dc.titleTotal absorption γ-ray spectroscopy of the β decays of 96gs,mY
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineAccelerator Laboratoryen
dc.contributor.oppiaineSchool of Resource Wisdomen
dc.rights.copyright©2022 American Physical Society
dc.relation.funderEuropean Commissionen
dc.relation.funderEuropean Commissionen
dc.relation.funderEuroopan komissiofi
dc.relation.funderEuroopan komissiofi
jyx.fundingprogramRIA Research and Innovation Action, H2020en
jyx.fundingprogramFP7 (EU's 7th Framework Programme)en
jyx.fundingprogramRIA Research and Innovation Action, H2020fi
jyx.fundingprogramEU:n 7. puiteohjelma (FP7)fi
jyx.fundinginformationThis work has been supported by the CNRS challenge NEEDS and the associated NACRE project, the CNRS/IN2P3 PICS TAGS between Subatech and IFIC, and the CNRS/IN2P3 Master projects Jyväskylä and OPALE. This work has also been supported by the Spanish Ministerio de Economía y Competitividad under Grants No. FPA2011- 24553, No. AIC-A-2011-0696, No. FPA2014-52823-C2- 1-P, No. FPA2015-65035-P, No. FPI/BES-2014-068222, No. FPA2017-83946-C2-1-P, and No. RTI2018-098868-BI00 and the program Severo Ochoa (SEV-2014-0398); by the Spanish Ministerio de Educación under Grant No. FPU12/01527; by the Spanish Ministerio de Ciencia e Innovación under Grant No. PID2019-104714GB-C21; by the European Commission under CHANDA project funded under FP7-EURATOM-FISSION Grant No. 605203; the FP7/ENSAR Contract No. 262010; the SANDA project funded under H2020-EURATOM-1.1 Grant No. 847552. V.G. acknowledges the support of the Polish National Agency for Academic Exchange (NAWA) under Grant No. PPN/ULM/2019/1/00220 and of the National Science Center, Poland, under Contract No. 2019/35/D/ST2/02081. W.G. acknowledges the support of the U.K. Science and Technology Facilities Council Grant No. ST/P005314/. This work was supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012-2017 (Project No. 213503, Nuclear and Accelerator-Based Physics Research at JYFL). Support from the IAEA Nuclear Data Section is acknowledged.

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