Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup
The ground-state configuration of ³⁵Al has been studied via Coulomb dissociation (CD) using the LAND-FRS setup (GSI, Darmstadt) at a relativistic energy of ~ 403 MeV/nucleon. The measured inclusive differential CD cross section for ³⁵Al, integrated up to 5.0 MeV relative energy between the ³³Al core...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/18345 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/18345 |
| Access Level: | acceso abierto |
| Palabra clave: | 539.1 N=20 Shell closure Mass measurements Nuclei Isotopes Excitation Collisions Inversion Emission Island Ions Electricidad Electrónica (Física) Física nuclear 2202.03 Electricidad 2207 Física Atómica y Nuclear |
| id |
ES_221ab6f73a4aa51614c3cc82a7bcdfbb |
|---|---|
| oai_identifier_str |
oai:docta.ucm.es:20.500.14352/18345 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| spelling |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakupFraile Prieto, Luis MarioBeceiro Novo, S:539.1N=20 Shell closureMass measurementsNucleiIsotopesExcitationCollisionsInversionEmissionIslandIonsElectricidadElectrónica (Física)Física nuclear2202.03 Electricidad2207 Física Atómica y NuclearThe ground-state configuration of ³⁵Al has been studied via Coulomb dissociation (CD) using the LAND-FRS setup (GSI, Darmstadt) at a relativistic energy of ~ 403 MeV/nucleon. The measured inclusive differential CD cross section for ³⁵Al, integrated up to 5.0 MeV relative energy between the ³³Al core and the neutron using a Pb target, is 78(13) mb. The exclusive measured CD cross section that populates various excited states of ³³Al is 29(7) mb. The differential CD cross section of ³⁵Al -> ³⁴Al + n has been interpreted in the light of a direct breakup model, and it suggests that the possible ground-state spin and parity of ³⁵Al could be, tentatively, 1/2⁺ or 3/2⁺ or 5/2⁺. The valence neutrons, in the ground state of ³⁵Al, may occupy a combination of either l = 3,0 or l = 1,2 orbitals coupled with the ³⁴Al core in the ground and isomeric state(s), respectively. This hints of a particle-hole configuration of the neutron across the magic shell gaps at N = 20,28 which suggests narrowing the magic shell gap. If the 5/2⁺ is the ground-state spin-parity of ³⁵Al as suggested in the literature, then the major ground-state configuration of ³⁵Al is a combination of ³⁴Al (g. s.; 4⁻) circle times ν_(p_(3/2)) and ³⁴Al (isomer; 1⁺) circle times ν _(d_(3/2)) states. The result from this experiment has been compared with that from a previous knockout measurement and a calculation using the SDPF-M interaction.American Physical SocietyUniversidad Complutense de Madrid20172017-09-0120172017-09-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/18345reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/183452026-06-02T12:44:21Z |
| dc.title.none.fl_str_mv |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| title |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| spellingShingle |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup Fraile Prieto, Luis Mario 539.1 N=20 Shell closure Mass measurements Nuclei Isotopes Excitation Collisions Inversion Emission Island Ions Electricidad Electrónica (Física) Física nuclear 2202.03 Electricidad 2207 Física Atómica y Nuclear |
| title_short |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| title_full |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| title_fullStr |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| title_full_unstemmed |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| title_sort |
Ground-state configuration of neutron-rich ³⁵Al via Coulomb breakup |
| dc.creator.none.fl_str_mv |
Fraile Prieto, Luis Mario Beceiro Novo, S: |
| author |
Fraile Prieto, Luis Mario |
| author_facet |
Fraile Prieto, Luis Mario Beceiro Novo, S: |
| author_role |
author |
| author2 |
Beceiro Novo, S: |
| author2_role |
author |
| dc.contributor.none.fl_str_mv |
Universidad Complutense de Madrid |
| dc.subject.none.fl_str_mv |
539.1 N=20 Shell closure Mass measurements Nuclei Isotopes Excitation Collisions Inversion Emission Island Ions Electricidad Electrónica (Física) Física nuclear 2202.03 Electricidad 2207 Física Atómica y Nuclear |
| topic |
539.1 N=20 Shell closure Mass measurements Nuclei Isotopes Excitation Collisions Inversion Emission Island Ions Electricidad Electrónica (Física) Física nuclear 2202.03 Electricidad 2207 Física Atómica y Nuclear |
| description |
The ground-state configuration of ³⁵Al has been studied via Coulomb dissociation (CD) using the LAND-FRS setup (GSI, Darmstadt) at a relativistic energy of ~ 403 MeV/nucleon. The measured inclusive differential CD cross section for ³⁵Al, integrated up to 5.0 MeV relative energy between the ³³Al core and the neutron using a Pb target, is 78(13) mb. The exclusive measured CD cross section that populates various excited states of ³³Al is 29(7) mb. The differential CD cross section of ³⁵Al -> ³⁴Al + n has been interpreted in the light of a direct breakup model, and it suggests that the possible ground-state spin and parity of ³⁵Al could be, tentatively, 1/2⁺ or 3/2⁺ or 5/2⁺. The valence neutrons, in the ground state of ³⁵Al, may occupy a combination of either l = 3,0 or l = 1,2 orbitals coupled with the ³⁴Al core in the ground and isomeric state(s), respectively. This hints of a particle-hole configuration of the neutron across the magic shell gaps at N = 20,28 which suggests narrowing the magic shell gap. If the 5/2⁺ is the ground-state spin-parity of ³⁵Al as suggested in the literature, then the major ground-state configuration of ³⁵Al is a combination of ³⁴Al (g. s.; 4⁻) circle times ν_(p_(3/2)) and ³⁴Al (isomer; 1⁺) circle times ν _(d_(3/2)) states. The result from this experiment has been compared with that from a previous knockout measurement and a calculation using the SDPF-M interaction. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017 2017-09-01 2017 2017-09-01 |
| 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/20.500.14352/18345 |
| url |
https://hdl.handle.net/20.500.14352/18345 |
| 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 |
| rights_invalid_str_mv |
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 |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869404558150598656 |
| score |
15,301629 |