Multi-quasiparticle sub-nanosecond isomers in W-178

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dc.contributor.authorBenito García, Jaime
dc.contributor.authorFraile Prieto, Luis Mario
dc.contributor.authorSánchez-Tembleque Verbo, Victor
dc.contributor.authorVedia Fernández, María Victoria
dc.date.accessioned2023-06-16T15:17:17Z
dc.date.available2023-06-16T15:17:17Z
dc.date.issued2020-02-10
dc.description© 2019 The Author(s). Published by Elsevier B.V. Artículo firmado por 36 autores. Funding support is acknowledged from the UK Science and Technology Facilities Council under grant numbers ST/L005743/1 and ST/P005314/1, as well as the BMBF under grants NuSTAR.DA 05P15RDFN1, and 05P19PKFNA. This work was also supported by the Spanish gouvernment projects FPA2015-65035-P and RTI2018-098868-B-I00, as well as the project B2017/BMD-3888 PRONTO-CM. P.H. Regan acknowledges support from the UK Department of Business, Energy and Industrial Strategy (BEIS) via the Natioanl Measurement System (NMS). R.L. Canavan acknowledges support from the BEIS, and ENSAR2 transnational access funding from the European Commission.
dc.description.abstractWe report on the first measurement of the half-lives of K-pi = 11(-) and 12(+) four-quasiparticle states in the even-even nucleus W-178. The sub-nanosecond half-lives were measured by applying the centroid shift method to data taken with LaBr3(Ce) scintillator detectors of the NuBall array at the ALTO facility in Orsay, France. The half-lives of these states only became experimentally accessible by the combination of several experimental techniques - scintillator fast timing, isomer spectroscopy with a pulsed beam, and the event-by-event calorimetry information provided by the NuBall array. The measured half-lives are 476(44)ps and 275(65)ps for the I-pi = 11(-) and 12(+) states, respectively. The decay transitions include weakly hindered E1 and E2 branches directly to the ground-state band, bypassing the two-quasiparticle states. This is the first such observation for an E1 transition. The interpretation of the small hindrance hinges on mixing between the ground-state band and the t-band. (C) 2019 The Author(s). Published by Elsevier B.V.
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.sponsorshipComunidad de Madrid
dc.description.sponsorshipUK Science and Technology Facilities Council (STFC)
dc.description.sponsorshipBMBF Federal Ministry of Education & Research (BMBF)
dc.description.sponsorshipUK Department of Business, Energy and Industrial Strategy (BEIS) via the Natioanl Measurement System (NMS)
dc.description.sponsorshipBEIS
dc.description.sponsorshipEuropean Commission Joint Research Centre
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/60171
dc.identifier.doi10.1016/j.physletb.2019.135140
dc.identifier.issn0370-2693
dc.identifier.officialurlhttps://doi.org/10.1016/j.physletb.2019.135140
dc.identifier.relatedurlhttps://www.sciencedirect.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/6191
dc.journal.titlePhysics letters B
dc.language.isoeng
dc.publisherElsevier Science BV
dc.relation.projectID(FPA2015-65035-P; RTI2018-098868-B-I00)
dc.relation.projectIDPRONTO-CM (B2017/BMD-3888)
dc.relation.projectID(ST/L005743/1; ST/P005314/1)
dc.relation.projectID(NuSTAR.DA 05P15RDFN1; 05P19PKFNA)
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.keywordLifetime measurements
dc.subject.keywordSpectroscopy
dc.subject.keywordNuclei
dc.subject.keywordDecay
dc.subject.ucmFísica nuclear
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleMulti-quasiparticle sub-nanosecond isomers in W-178
dc.typejournal article
dc.volume.number801
dspace.entity.typePublication
relation.isAuthorOfPublication5793d08f-db68-4192-b28f-63cbb781dcc3
relation.isAuthorOfPublicationec83106c-33f4-426c-afd6-68c5d859f9d4
relation.isAuthorOfPublicationf4e3f123-33ad-46e8-a3b6-00fd1eba9eeb
relation.isAuthorOfPublication.latestForDiscovery5793d08f-db68-4192-b28f-63cbb781dcc3
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