dc.creator | Caballero Folch, R. | es |
dc.creator | Domingo Pardo, César | es |
dc.creator | Agramunt-Ros, J. | es |
dc.creator | Algora, A. | es |
dc.creator | Ameil, F. | es |
dc.creator | Ayyad, Y. | es |
dc.creator | Guerrero Sánchez, Carlos | es |
dc.date.accessioned | 2019-06-11T10:20:34Z | |
dc.date.available | 2019-06-11T10:20:34Z | |
dc.date.issued | 2017-06-23 | |
dc.identifier.citation | Caballero Folch, R., Domingo Pardo, C., Agramunt-Ros, J., Algora, A., Ameil, F., Ayyad, Y. y Guerrero Sánchez, C. (2017). β-decay half-lives and β-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126. Physical Review C, 95, 064322. | |
dc.identifier.issn | 2469-9985 | es |
dc.identifier.issn | 2469-9993 | es |
dc.identifier.uri | https://hdl.handle.net/11441/87333 | |
dc.description.abstract | Background: There have been measurements on roughly 230 nuclei that are β-delayed neutron emitters. They
range from 8
He 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 β-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 β
decays. An array of 30 3
He 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 β-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.
Conclusions: The new β-decay half-lives are in good agreement with previous measurements on nuclei in this
region. The measured neutron emission probabilities are comparable to or smaller than values predicted by global
models such as relativistic Hartree Bogoliubov plus the relativistic quasi-particle random phase approximation
(RHB + RQRPA). | es |
dc.description.sponsorship | Spanish Ministerio de Economía y Competitividad-FPA2011- 28770-C03-03, FPA2008-04972-C03-3, AIC-D2011-0705, FPA2011-24553, FPA2008-6419, FPA2010-17142, FPA2014-52823-C2-1-P, FPA2014- 52823-C2-2-P, and CPAN CSD-2007-00042 (Ingenio2010) | es |
dc.description.sponsorship | Program Severo Ochoa-SEV-2014-0398 | es |
dc.description.sponsorship | German Helmholtz Association (Young Investigators)-VH-NG 627 (LISA-Lifetime Spectroscopy for Astrophysics) | es |
dc.description.sponsorship | Nuclear Astrophysics Virtual Institute-VH-VI-417 | es |
dc.description.sponsorship | German Bundesministerium für Bildung und Forschung-06MT7178 / 05P12WOFNF | es |
dc.description.sponsorship | Spanish Nuclear Security Council (CSN)-Catedra Argos | es |
dc.description.sponsorship | UK Science & Technology Facilities Council (STFC)-ST/F012012/1 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | American Physical Society | es |
dc.relation.ispartof | Physical Review C, 95, 064322. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | β-decay half-lives and β-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126 | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | FPA2011- 28770-C03-03 | es |
dc.relation.projectID | FPA2008-04972-C03-3 | es |
dc.relation.projectID | AIC-D2011-0705 | es |
dc.relation.projectID | FPA2011-24553 | es |
dc.relation.projectID | FPA2008-6419 | es |
dc.relation.projectID | FPA2010-17142 | es |
dc.relation.projectID | FPA2014-52823-C2-1-P | es |
dc.relation.projectID | FPA2014- 52823-C2-2-P | es |
dc.relation.projectID | CPAN CSD-2007-00042 (Ingenio2010) | es |
dc.relation.projectID | SEV-2014-0398 | es |
dc.relation.projectID | VH-NG 627 (LISA-Lifetime Spectroscopy for Astrophysics) | es |
dc.relation.projectID | VH-VI-417 | es |
dc.relation.projectID | 06MT7178 / 05P12WOFNF | es |
dc.relation.projectID | ST/F012012/1 | es |
dc.relation.publisherversion | https://journals.aps.org/prc/abstract/10.1103/PhysRevC.95.064322 | es |
dc.identifier.doi | 10.1103/PhysRevC.95.064322 | es |
idus.format.extent | 17 p. | es |
dc.journaltitle | Physical Review C | es |
dc.publication.volumen | 95 | es |
dc.publication.initialPage | 064322 | es |