Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier

Proton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with the use of a high granularity and large solid angle detection system, allowed f...

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Autores: Spartà, Roberta, Di Pietro, Alessia, Figuera, Pierpaolo, Tengblad, Olof, Moro Muñoz, Antonio Matías, Martel Bravo, Ismael, Fernández García, Juan Pablo, Viñals, Silvia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/128828
Acceso en línea:https://hdl.handle.net/11441/128828
https://doi.org/10.1016/j.physletb.2021.136477
Access Level:acceso abierto
Palabra clave:Halo nuclei
Elastic scattering
Breakup
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spelling Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrierSpartà, RobertaDi Pietro, AlessiaFiguera, PierpaoloTengblad, OlofMoro Muñoz, Antonio MatíasMartel Bravo, IsmaelFernández García, Juan PabloViñals, SilviaHalo nucleiElastic scatteringBreakupProton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with the use of a high granularity and large solid angle detection system, allowed for a careful mapping of the elastic angular distribution, especially in the Coulomb-nuclear interference region. Contrary to what is observed for the one-neutron halo nucleus 11Be on the same target in a similar energy range, the analysis of the elastic scattering angular distribution shows only a modest suppression of the Coulomb-nuclear interference peak, with no remarkable enhancement of the total reaction cross-section. Inclusive angular and energy distributions of 7Be produced in direct reaction processes have also been measured. The comparison of these data with the results of theoretical calculations for the elastic and non-elastic breakup contributions indicate that both processes are important. Overall, the experimental data suggest a 8B collision dynamics at the barrier very different from the one of neutron halo nuclei, showing only modest effects of coupling to continuum. This behaviour can be interpreted as due to the presence of the additional Coulomb interactions halo-core and halo-target together with the presence of the centrifugal barrier felt by the valence proton of 8B.UE ENSAR2 Subvención nº 654002Istituto Nazionale di Fisica Nucleare (INFN) Italia, Science and Technology Facilities Council (STFC) Reino Unido y la Agencia Española de Financiación “ELEGANT” PGC2018-095640-B-100, FIS2017-88410-P, PDI2019- 104390GB-100, FPA2016-77689-C2-1-R, PGC2018-096994-B-C21, PGC2018-096994-B-C22 y RTI2018-098868-B-I00ElsevierFísica Atómica, Molecular y NuclearEuropean Union (UE)Istituto Nazionale di Fisica Nucleare (INFN) ItaliaScience and Technology Facilities Council (STFC) Reino Unido2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/128828https://doi.org/10.1016/j.physletb.2021.136477reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPhysics Letters B, 820, 136477.Subvención nº 654002“ELEGANT” PGC2018-095640-B-100FIS2017-88410-PPDI2019-104390GB-100FPA2016-77689-C2-1-RPGC2018-096994-B-C21PGC2018-096994-B-C22RTI2018-098868-B-I00https://doi.org/10.1016/j.physletb.2021.136477info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1288282026-06-17T12:51:07Z
dc.title.none.fl_str_mv Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
title Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
spellingShingle Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
Spartà, Roberta
Halo nuclei
Elastic scattering
Breakup
title_short Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
title_full Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
title_fullStr Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
title_full_unstemmed Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
title_sort Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
dc.creator.none.fl_str_mv Spartà, Roberta
Di Pietro, Alessia
Figuera, Pierpaolo
Tengblad, Olof
Moro Muñoz, Antonio Matías
Martel Bravo, Ismael
Fernández García, Juan Pablo
Viñals, Silvia
author Spartà, Roberta
author_facet Spartà, Roberta
Di Pietro, Alessia
Figuera, Pierpaolo
Tengblad, Olof
Moro Muñoz, Antonio Matías
Martel Bravo, Ismael
Fernández García, Juan Pablo
Viñals, Silvia
author_role author
author2 Di Pietro, Alessia
Figuera, Pierpaolo
Tengblad, Olof
Moro Muñoz, Antonio Matías
Martel Bravo, Ismael
Fernández García, Juan Pablo
Viñals, Silvia
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
European Union (UE)
Istituto Nazionale di Fisica Nucleare (INFN) Italia
Science and Technology Facilities Council (STFC) Reino Unido
dc.subject.none.fl_str_mv Halo nuclei
Elastic scattering
Breakup
topic Halo nuclei
Elastic scattering
Breakup
description Proton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with the use of a high granularity and large solid angle detection system, allowed for a careful mapping of the elastic angular distribution, especially in the Coulomb-nuclear interference region. Contrary to what is observed for the one-neutron halo nucleus 11Be on the same target in a similar energy range, the analysis of the elastic scattering angular distribution shows only a modest suppression of the Coulomb-nuclear interference peak, with no remarkable enhancement of the total reaction cross-section. Inclusive angular and energy distributions of 7Be produced in direct reaction processes have also been measured. The comparison of these data with the results of theoretical calculations for the elastic and non-elastic breakup contributions indicate that both processes are important. Overall, the experimental data suggest a 8B collision dynamics at the barrier very different from the one of neutron halo nuclei, showing only modest effects of coupling to continuum. This behaviour can be interpreted as due to the presence of the additional Coulomb interactions halo-core and halo-target together with the presence of the centrifugal barrier felt by the valence proton of 8B.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/128828
https://doi.org/10.1016/j.physletb.2021.136477
url https://hdl.handle.net/11441/128828
https://doi.org/10.1016/j.physletb.2021.136477
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physics Letters B, 820, 136477.
Subvención nº 654002
“ELEGANT” PGC2018-095640-B-100
FIS2017-88410-P
PDI2019-104390GB-100
FPA2016-77689-C2-1-R
PGC2018-096994-B-C21
PGC2018-096994-B-C22
RTI2018-098868-B-I00
https://doi.org/10.1016/j.physletb.2021.136477
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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