Octupole states in 207Tl studied through β decay

The β decay of Hg-207 into the single-proton-hole nucleus Tl-207 has been studied through gamma-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the pi s(1/2)(-1), pi d(3/2)(-1) and pi h(11/2)(-1) shell model orbitals to the collective...

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Detalles Bibliográficos
Autores: Fraile Prieto, Luis Mario, Vedia Fernández, María Victoria, otros, ...
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/6331
Acceso en línea:https://hdl.handle.net/20.500.14352/6331
Access Level:acceso abierto
Palabra clave:539.1
Nuclear-data sheets
Proton-hole states
Transitions
Física nuclear
2207 Física Atómica y Nuclear
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oai_identifier_str oai:docta.ucm.es:20.500.14352/6331
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network_name_str España
repository_id_str
spelling Octupole states in 207Tl studied through β decayFraile Prieto, Luis MarioVedia Fernández, María Victoriaotros, ...539.1Nuclear-data sheetsProton-hole statesTransitionsFísica nuclear2207 Física Atómica y NuclearThe β decay of Hg-207 into the single-proton-hole nucleus Tl-207 has been studied through gamma-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the pi s(1/2)(-1), pi d(3/2)(-1) and pi h(11/2)(-1) shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s(3/2)-coupled) are identified and three more states (d(3/2)-coupled) are tentatively assigned using spin-parity inferences, while further h(11/2)-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective t = 1 states (t is the number of nucleons breaking the Pb-208 core), the effect of t = 2 mixing may be reduced for octupole-coupled states. The inclusion of mixing with t = 0, 2, 3 excitations is necessary to replicate all t = 1 state energies accurately.American Physical SocietyUniversidad Complutense de Madrid20202020-05-1820202020-05-18journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/6331reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/63312026-06-02T12:44:21Z
dc.title.none.fl_str_mv Octupole states in 207Tl studied through β decay
title Octupole states in 207Tl studied through β decay
spellingShingle Octupole states in 207Tl studied through β decay
Fraile Prieto, Luis Mario
539.1
Nuclear-data sheets
Proton-hole states
Transitions
Física nuclear
2207 Física Atómica y Nuclear
title_short Octupole states in 207Tl studied through β decay
title_full Octupole states in 207Tl studied through β decay
title_fullStr Octupole states in 207Tl studied through β decay
title_full_unstemmed Octupole states in 207Tl studied through β decay
title_sort Octupole states in 207Tl studied through β decay
dc.creator.none.fl_str_mv Fraile Prieto, Luis Mario
Vedia Fernández, María Victoria
otros, ...
author Fraile Prieto, Luis Mario
author_facet Fraile Prieto, Luis Mario
Vedia Fernández, María Victoria
otros, ...
author_role author
author2 Vedia Fernández, María Victoria
otros, ...
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 539.1
Nuclear-data sheets
Proton-hole states
Transitions
Física nuclear
2207 Física Atómica y Nuclear
topic 539.1
Nuclear-data sheets
Proton-hole states
Transitions
Física nuclear
2207 Física Atómica y Nuclear
description The β decay of Hg-207 into the single-proton-hole nucleus Tl-207 has been studied through gamma-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the pi s(1/2)(-1), pi d(3/2)(-1) and pi h(11/2)(-1) shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s(3/2)-coupled) are identified and three more states (d(3/2)-coupled) are tentatively assigned using spin-parity inferences, while further h(11/2)-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective t = 1 states (t is the number of nucleons breaking the Pb-208 core), the effect of t = 2 mixing may be reduced for octupole-coupled states. The inclusion of mixing with t = 0, 2, 3 excitations is necessary to replicate all t = 1 state energies accurately.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-05-18
2020
2020-05-18
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/6331
url https://hdl.handle.net/20.500.14352/6331
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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