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dc.contributor.authorCaballero-Folch, R.
dc.contributor.authorDomingo-Pardo, C
dc.contributor.authorAgramunt Ros, Jorge
dc.contributor.authorCalviño Tavares, Francisco
dc.contributor.authorCortés Rossell, Guillem Pere
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.identifier.citationCaballero-Folch, R., Domingo-Pardo, C., Agramunt, J., Calviño, F., Cortes, G. Beta-decay half-lives and beta-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126. "Physical review C", 23 Juny 2017, vol. 95, núm. 6, p. 064322-1-064322-16.
dc.description.abstractBackground: There have been measurements on roughly 230 nuclei that are beta-delayed neutron emitters. They range from 8He up to 150La. Apart from 210Tl, with a branching ratio of only 0.007%, no other neutron emitter has been measured beyond A = 150. Therefore, new data are needed, particularly in the region of heavy nuclei around N = 126, in order to guide theoretical models and help understand the formation of the third r-process peak at A ~ 195. Purpose: To measure both ß-decay half-lives and neutron branching ratios of several neutron-rich Au, Hg, Tl, Pb, and Bi isotopes beyond N = 126. Method: Ions of interest were produced by fragmentation of a 238U beam, selected and identified via the GSI-FRS fragment separator. A stack of segmented silicon detectors (SIMBA) was used to measure ion implants and Beta decays. An array of 30 3He tubes embedded in a polyethylene matrix (BELEN) was used to detect neutrons with high efficiency and selectivity. A self-triggered digital system is employed to acquire data and to enable time correlations. The latter were analyzed with an analytical model and results for the half-lives and neutron-branching ratios were derived by using the binned maximum-likelihood method. Results: Twenty new beta-decay half-lives are reported for 204-206Au, 208–211Hg,211–216Tl,215–218Pb, and 218–220Bi, nine of them for the first time. Neutron emission probabilities are reported for 210,211Hg and 211–216Tl.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subjectÀrees temàtiques de la UPC::Energies::Energia nuclear
dc.subject.otherBeta decay
dc.subject.otherDelayed neutrons
dc.subject.otherExotic nuclei
dc.titleBeta-decay half-lives and beta-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126
dc.contributor.groupUniversitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorCaballero-Folch, R.; Domingo-Pardo, C.; Agramunt, J.; Calviño, F.; Cortes, G.
local.citation.publicationNamePhysical review C

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