Beta-decay half-lives and beta-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126
dc.contributor.author | Caballero-Folch, R. |
dc.contributor.author | Domingo-Pardo, C |
dc.contributor.author | Agramunt Ros, Jorge |
dc.contributor.author | Calviño Tavares, Francisco |
dc.contributor.author | Cortés Rossell, Guillem Pere |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.date.accessioned | 2017-06-30T07:38:14Z |
dc.date.available | 2017-06-30T07:38:14Z |
dc.date.issued | 2017-06-23 |
dc.identifier.citation | Caballero-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.identifier.issn | 0556-2813 |
dc.identifier.uri | http://hdl.handle.net/2117/106018 |
dc.description.abstract | Background: 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.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject | Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
dc.subject | Àrees temàtiques de la UPC::Energies::Energia nuclear |
dc.subject.lcsh | Neutrons |
dc.subject.lcsh | Astrophysics |
dc.subject.other | Beta decay |
dc.subject.other | Delayed neutrons |
dc.subject.other | Astrophysics |
dc.subject.other | Exotic nuclei |
dc.title | Beta-decay half-lives and beta-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126 |
dc.type | Article |
dc.subject.lemac | Neutrons |
dc.subject.lemac | Astrofísica |
dc.contributor.group | Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group |
dc.identifier.doi | 10.1103/PhysRevC.95.064322 |
dc.relation.publisherversion | https://journals.aps.org/prc/abstract/10.1103/PhysRevC.95.064322 |
dc.rights.access | Open Access |
local.identifier.drac | 21120559 |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/MICINN/6PN/FPA2011-28770-C03-03 |
local.citation.author | Caballero-Folch, R.; Domingo-Pardo, C.; Agramunt, J.; Calviño, F.; Cortes, G. |
local.citation.publicationName | Physical review C |
local.citation.volume | 95 |
local.citation.number | 6 |
local.citation.startingPage | 064322-1 |
local.citation.endingPage | 064322-16 |
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