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dc.contributor.authorOishi, Tomohiro
dc.contributor.authorKortelainen, Markus
dc.contributor.authorPastore, Alessandro
dc.date.accessioned2017-11-14T11:49:17Z
dc.date.available2017-11-14T11:49:17Z
dc.date.issued2017
dc.identifier.citationOishi, T., Kortelainen, M., & Pastore, A. (2017). Dependence of two-proton radioactivity on nuclear pairing models. <i>Physical Review C</i>, <i>96</i>(4), Article 044327. <a href="https://doi.org/10.1103/PhysRevC.96.044327" target="_blank">https://doi.org/10.1103/PhysRevC.96.044327</a>
dc.identifier.otherCONVID_27308479
dc.identifier.otherTUTKAID_75460
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/55874
dc.description.abstractSensitivity of two-proton emitting decay to nuclear pairing correlation is discussed within a time-dependent three-body model. We focus on the 6Be nucleus assuming α+p+p configuration, and its decay process is described as a time evolution of the three-body resonance state. For a proton-proton subsystem, a schematic density-dependent contact (SDDC) pairing model is employed. From the time-dependent calculation, we observed the exponential decay rule of a two-proton emission. It is shown that the density dependence does not play a major role in determining the decay width, which can be controlled only by the asymptotic strength of the pairing interaction. This asymptotic pairing sensitivity can be understood in terms of the dynamics of the wave function driven by the three-body Hamiltonian, by monitoring the time-dependent density distribution. With this simple SDDC pairing model, there remains an impossible trinity problem: it cannot simultaneously reproduce the empirical Q value, decay width, and the nucleon-nucleon scattering length. This problem suggests that a further sophistication of the theoretical pairing model is necessary, utilizing the two-proton radioactivity data as the reference quantities.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherfew-body systems
dc.subject.otherlifetimes
dc.subject.otherwidths
dc.subject.othernuclear forces
dc.subject.otherproton emission
dc.titleDependence of two-proton radioactivity on nuclear pairing models
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201710304085
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-10-30T07:15:06Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.numberinseries4
dc.relation.volume96
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.96.044327


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