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dc.contributor.authorDelion, D. S.
dc.contributor.authorSuhonen, Jouni
dc.date.accessioned2017-04-26T09:41:18Z
dc.date.available2017-04-26T09:41:18Z
dc.date.issued2017
dc.identifier.citationDelion, D. S., & Suhonen, J. (2017). Two-neutrino ββ decays and low-lying Gamow-Teller β− strength functions in the mass range A=70–176. <i>Physical Review C</i>, <i>95</i>(3), Article 034330. <a href="https://doi.org/10.1103/PhysRevC.95.034330" target="_blank">https://doi.org/10.1103/PhysRevC.95.034330</a>
dc.identifier.otherCONVID_26950070
dc.identifier.otherTUTKAID_73495
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/53684
dc.description.abstractWe apply the proton-neutron deformed quasiparticle random-phase approximation (pn-dQRPA) to describe the low-lying (E 6 MeV) 1+ Gamow-Teller (GT) strength functions in odd-odd deformed nuclei which participate as intermediate nuclei in two-neutrino double-β-decay (2νββ) transitions within the mass range A = 70–176. In deriving equations of motion we use a single-particle basis with projected angular momentum, provided by the diagonalization of a spherical mean field furnished with a quadrupole-quadrupole interaction. The schematic residual Hamiltonian contains pairing and proton-neutron interaction terms in particle-hole (ph) and particle-particle (pp) channels, with constant strengths. By adopting constant particle-hole and particle-particle strengths we are able to describe the positions of the giant GT resonance and the measured half-lives of the 2νββ decays over the whole mass range A = 70–176. At the same time we obtain a good agreement with the measured low-lying GT β− strength functions. By using the adopted ph and pp strengths, we predict the half-lives of a number of deformed 2νββ emitters and the low-lying GT strength functions of the corresponding odd-odd intermediate nuclei for their possible experimental tests in the future.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherdeformed nuclei
dc.subject.otherdouble-beta-decay
dc.subject.otherGamow-Teller strength functions
dc.titleTwo-neutrino ββ decays and low-lying Gamow-Teller β− strength functions in the mass range A=70–176
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201704131995
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-04-13T12:15:10Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.numberinseries3
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.95.034330


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