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dc.contributor.authorTolosa-Delgado, Alvaro
dc.contributor.authorAgramunt Ros, Jorge
dc.contributor.authorCalviño Tavares, Francisco
dc.contributor.authorCortés Rossell, Guillem Pere
dc.contributor.authorTarifeño Saldivia, Ariel Esteban
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Tècniques Energètiques
dc.identifier.citationTolosa-Delgado, A., Agramunt, J., Calviño, F., Cortes, G., Tarifeño, A. Commissioning of the BRIKEN beta-delayed neutron detector for the study of exotic neutron-rich nuclei. A: Nuclear Physics in Astrophysics. "EPJ Web Conf., volume 165, 2017. Nuclear Physics in Astrophysics VIII (NPA8 2017)". Catania: EDP Sciences, 2018, p. 01051-1-01051-4.
dc.description.abstractBeta-delayed neutron emission (Beta-n) is a form of radioactive decay in which an electron, an anti-neutrino and one or more neutrons are emitted. This process arises if the energy window of the decay Q_Beta is greater than the neutron separation energy S n of the daughter. The probability in each decay of emitting neutrons is called the Pn value. This form of decay plays a key role in the synthesis of chemical elements in the Universe via the rapid neutron capture process, or r-process. The r-process proceeds far from the valley of nuclear stability, and leads to very neutron-rich nuclei that then decay to the line of stability. Most of these nuclei are ßn emitters. The initial abundance distribution is shaped by the decay half-life T1/2, but the neutron emission affects the final abundances in two ways: on the one hand it shifts the decay path to lower masses and on the other hand it provides a source of neutrons for late captures that will shift it in the opposite way. Thus, a good knowledge of Pn and T1/2 values of the nuclei between the line of stability and the r-process path is needed for a correct understanding of the observed abundances. Besides the astrophysical interest, the measurement of new Pn values and half-lives is also useful for refining nuclear structure models, constraining parameters of the models and testing ß-strength functions [3]. Our current understanding of the process of ß-delayed multiple neutron emission, as well as the competition between different open channels (gamma, one-neutron, two-neutron, etc), is incomplete because of the scarcity of experimental data. With these ideas in mind, the BRIKEN (Beta-delayed-neutron-measurements at RIKEN) collaboration was established, with the aim of greatly improving the quantity and quality of data the decays of very neutron-rich nuclei close to the r-process path.
dc.publisherEDP Sciences
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.subjectÀrees temàtiques de la UPC::Energies::Energia nuclear
dc.subject.otherDelayed neutrons
dc.subject.otherNeutron detector
dc.titleCommissioning of the BRIKEN beta-delayed neutron detector for the study of exotic neutron-rich nuclei
dc.typeConference lecture
dc.contributor.groupUniversitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MICINN/1PE/ FPA2011-28770-C03-03
upcommons.citation.authorTolosa-Delgado, A.; Agramunt, J.; Calviño, F.; Cortes, G.; Tarifeño, A.
upcommons.citation.contributorNuclear Physics in Astrophysics
upcommons.citation.publicationNameEPJ Web Conf., volume 165, 2017. Nuclear Physics in Astrophysics VIII (NPA8 2017)

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