Strong neutron pairing in core+4n nuclei
The emission of neutron pairs from the neutron-rich N = 12 isotones ¹⁸C and ²⁰O has been studied by high-energy nucleon knockout from ¹⁹N and ²¹O secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/12153 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/12153 |
| Access Level: | acceso abierto |
| Palabra clave: | 539.1 Interferometry Decays State Física nuclear 2207 Física Atómica y Nuclear |
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Strong neutron pairing in core+4n nucleiFraile Prieto, Luis Mariootros, ...539.1InterferometryDecaysStateFísica nuclear2207 Física Atómica y NuclearThe emission of neutron pairs from the neutron-rich N = 12 isotones ¹⁸C and ²⁰O has been studied by high-energy nucleon knockout from ¹⁹N and ²¹O secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n-n correlations shows that the decay ¹⁹N (-1p)¹⁸C* → ¹⁶C + n + n is clearly dominated by direct pair emission. The two- neutron correlation strength, the largest ever observed, suggests the predominance of a ¹⁴C core surrounded by four valence neutrons arranged in strongly correlated pairs. On the other hand, a significant competition of a sequential branch is found in the decay ²¹O(-1n)²⁰O*→ ¹⁸O + n + n, attributed to its formation through the knockout of a deeply bound neutron that breaks the ¹⁶O core and reduces the number of pairs.American Physical SocietyUniversidad Complutense de Madrid20182018-04-1220182018-04-12journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/12153reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/121532026-06-02T12:44:21Z |
| dc.title.none.fl_str_mv |
Strong neutron pairing in core+4n nuclei |
| title |
Strong neutron pairing in core+4n nuclei |
| spellingShingle |
Strong neutron pairing in core+4n nuclei Fraile Prieto, Luis Mario 539.1 Interferometry Decays State Física nuclear 2207 Física Atómica y Nuclear |
| title_short |
Strong neutron pairing in core+4n nuclei |
| title_full |
Strong neutron pairing in core+4n nuclei |
| title_fullStr |
Strong neutron pairing in core+4n nuclei |
| title_full_unstemmed |
Strong neutron pairing in core+4n nuclei |
| title_sort |
Strong neutron pairing in core+4n nuclei |
| dc.creator.none.fl_str_mv |
Fraile Prieto, Luis Mario otros, ... |
| author |
Fraile Prieto, Luis Mario |
| author_facet |
Fraile Prieto, Luis Mario otros, ... |
| author_role |
author |
| author2 |
otros, ... |
| author2_role |
author |
| dc.contributor.none.fl_str_mv |
Universidad Complutense de Madrid |
| dc.subject.none.fl_str_mv |
539.1 Interferometry Decays State Física nuclear 2207 Física Atómica y Nuclear |
| topic |
539.1 Interferometry Decays State Física nuclear 2207 Física Atómica y Nuclear |
| description |
The emission of neutron pairs from the neutron-rich N = 12 isotones ¹⁸C and ²⁰O has been studied by high-energy nucleon knockout from ¹⁹N and ²¹O secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n-n correlations shows that the decay ¹⁹N (-1p)¹⁸C* → ¹⁶C + n + n is clearly dominated by direct pair emission. The two- neutron correlation strength, the largest ever observed, suggests the predominance of a ¹⁴C core surrounded by four valence neutrons arranged in strongly correlated pairs. On the other hand, a significant competition of a sequential branch is found in the decay ²¹O(-1n)²⁰O*→ ¹⁸O + n + n, attributed to its formation through the knockout of a deeply bound neutron that breaks the ¹⁶O core and reduces the number of pairs. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 2018-04-12 2018 2018-04-12 |
| 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/20.500.14352/12153 |
| url |
https://hdl.handle.net/20.500.14352/12153 |
| 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 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 |
| 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 |
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|
| repository.mail.fl_str_mv |
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1869413170661031936 |
| score |
15,301629 |