Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields

We study heavy-ion inelastic scattering processes in neutron-rich nuclei including the full response to the different multipolarities. Among these we focus in particular on the excitation of low-lying dipole states commonly associated to the pygmy dipole resonance. The multipole response is describe...

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Autores: Lanza, Edoardo G., Vitturi, Andrea, Andrés Martín, María Victoria, Catara, Francesco, Gambacurta, Danilo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/57189
Acceso en línea:http://hdl.handle.net/11441/57189
Access Level:acceso abierto
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spelling Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fieldsLanza, Edoardo G.Vitturi, AndreaAndrés Martín, María VictoriaCatara, FrancescoGambacurta, DaniloWe study heavy-ion inelastic scattering processes in neutron-rich nuclei including the full response to the different multipolarities. Among these we focus in particular on the excitation of low-lying dipole states commonly associated to the pygmy dipole resonance. The multipole response is described within the Hartree-Fock plus RPA formalism with Skyrme interaction. We show how the combined information from reactions processes involving the Coulomb and different mixtures of isoscalar and isovector nuclear interactions can provide a clue to reveal the characteristic features of these states. We have performed calculation for the excitation of 132Sn generated in the reactions with 4He, 40Ca, and 48Ca at several incident energies, as well as for the system 17O +208Pb. Our results suggest that the investigation of the PDR states can be better carried out at low incident energies (below 50 MeV/nucleon). In fact, at these energies the PDR peak is relatively stronger than the giant dipole resonance (GDR) one and the narrow width of the low-lying quadrupole and octupole states should not blur its presence.Ministerio de Ciencia e Innovación (España) y FEDER FPA2009-07653 FIS2008-04189Programa Consolider-Ingenio 2010 (España) CSD2007-00042Junta de Andalucía P07-FQM-02894 FQM160American Physical SocietyFísica Atómica, Molecular y Nuclear2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/57189reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPhysical Review C - Nuclear Physics, 84 (6), 064602-1-064602-10.FPA2009-07653FIS2008-04189CSD2007-00042P07-FQM-02894FQM16010.1103/PhysRevC.84.064602info:eu-repo/semantics/openAccessoai:idus.us.es:11441/571892026-06-17T12:51:07Z
dc.title.none.fl_str_mv Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
title Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
spellingShingle Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
Lanza, Edoardo G.
title_short Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
title_full Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
title_fullStr Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
title_full_unstemmed Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
title_sort Excitations of pygmy dipole resonances in exotic and stable nuclei via Coulomb and nuclear fields
dc.creator.none.fl_str_mv Lanza, Edoardo G.
Vitturi, Andrea
Andrés Martín, María Victoria
Catara, Francesco
Gambacurta, Danilo
author Lanza, Edoardo G.
author_facet Lanza, Edoardo G.
Vitturi, Andrea
Andrés Martín, María Victoria
Catara, Francesco
Gambacurta, Danilo
author_role author
author2 Vitturi, Andrea
Andrés Martín, María Victoria
Catara, Francesco
Gambacurta, Danilo
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
description We study heavy-ion inelastic scattering processes in neutron-rich nuclei including the full response to the different multipolarities. Among these we focus in particular on the excitation of low-lying dipole states commonly associated to the pygmy dipole resonance. The multipole response is described within the Hartree-Fock plus RPA formalism with Skyrme interaction. We show how the combined information from reactions processes involving the Coulomb and different mixtures of isoscalar and isovector nuclear interactions can provide a clue to reveal the characteristic features of these states. We have performed calculation for the excitation of 132Sn generated in the reactions with 4He, 40Ca, and 48Ca at several incident energies, as well as for the system 17O +208Pb. Our results suggest that the investigation of the PDR states can be better carried out at low incident energies (below 50 MeV/nucleon). In fact, at these energies the PDR peak is relatively stronger than the giant dipole resonance (GDR) one and the narrow width of the low-lying quadrupole and octupole states should not blur its presence.
publishDate 2011
dc.date.none.fl_str_mv 2011
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 http://hdl.handle.net/11441/57189
url http://hdl.handle.net/11441/57189
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review C - Nuclear Physics, 84 (6), 064602-1-064602-10.
FPA2009-07653
FIS2008-04189
CSD2007-00042
P07-FQM-02894
FQM160
10.1103/PhysRevC.84.064602
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 American Physical Society
publisher.none.fl_str_mv American Physical Society
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 15.301603

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