Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range

The quasi-free scattering reactions C-11(p, 2p) and C-10,C-11,C-12(p, pn) have been studied in inverse kinematics at beam energies of 300-400 MeV/u at the (RB)-B-3-LAND setup. The outgoing proton-proton and proton-neutron pairs were detected in coincidence with the reaction fragments in kinematicall...

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Detalhes bibliográficos
Autores: Holl, Matthias, Fraile Prieto, Luis Mario, Zuber, Kai
Tipo de documento: artigo
Data de publicação:2019
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/13788
Acesso em linha:https://hdl.handle.net/20.500.14352/13788
Access Level:Acceso aberto
Palavra-chave:539.1
Free scattering
Física nuclear
2207 Física Atómica y Nuclear
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oai_identifier_str oai:docta.ucm.es:20.500.14352/13788
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network_name_str España
repository_id_str
spelling Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry rangeHoll, MatthiasFraile Prieto, Luis MarioZuber, Kai539.1Free scatteringFísica nuclear2207 Física Atómica y NuclearThe quasi-free scattering reactions C-11(p, 2p) and C-10,C-11,C-12(p, pn) have been studied in inverse kinematics at beam energies of 300-400 MeV/u at the (RB)-B-3-LAND setup. The outgoing proton-proton and proton-neutron pairs were detected in coincidence with the reaction fragments in kinematically complete measurements. The efficiency to detect these pairs has been obtained from GEANT4 simulations which were tested using the C-12(p, 2p) and C-12(p, pn) reactions. Experimental cross sections and momentum distributions have been obtained and compared to DWIA calculations based on eikonal theory. The new results reported here are combined with previously published cross sections for quasi-free scattering from oxygen and nitrogen isotopes and together they enable a systematic study of the reduction of single-particle strength compared to predictions of the shell model over a wide neutron-to-proton asymmetry range. The combined reduction factors show a weak or no dependence on isospin asymmetry, in contrast to the strong dependency reported in nucleon-removal reactions induced by nuclear targets at lower energies. However, the reduction factors for (p, 2p) are found to be 'significantly smaller than for (p, pn) reactions for all investigated nuclei. (C) 2019 The Authors. Published by Elsevier B.V.Elsevier Science BVUniversidad Complutense de Madrid20192019-01-0120192019-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/13788reponame: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:20.500.14352/137882026-06-02T12:44:21Z
dc.title.none.fl_str_mv Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
title Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
spellingShingle Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
Holl, Matthias
539.1
Free scattering
Física nuclear
2207 Física Atómica y Nuclear
title_short Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
title_full Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
title_fullStr Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
title_full_unstemmed Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
title_sort Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range
dc.creator.none.fl_str_mv Holl, Matthias
Fraile Prieto, Luis Mario
Zuber, Kai
author Holl, Matthias
author_facet Holl, Matthias
Fraile Prieto, Luis Mario
Zuber, Kai
author_role author
author2 Fraile Prieto, Luis Mario
Zuber, Kai
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 539.1
Free scattering
Física nuclear
2207 Física Atómica y Nuclear
topic 539.1
Free scattering
Física nuclear
2207 Física Atómica y Nuclear
description The quasi-free scattering reactions C-11(p, 2p) and C-10,C-11,C-12(p, pn) have been studied in inverse kinematics at beam energies of 300-400 MeV/u at the (RB)-B-3-LAND setup. The outgoing proton-proton and proton-neutron pairs were detected in coincidence with the reaction fragments in kinematically complete measurements. The efficiency to detect these pairs has been obtained from GEANT4 simulations which were tested using the C-12(p, 2p) and C-12(p, pn) reactions. Experimental cross sections and momentum distributions have been obtained and compared to DWIA calculations based on eikonal theory. The new results reported here are combined with previously published cross sections for quasi-free scattering from oxygen and nitrogen isotopes and together they enable a systematic study of the reduction of single-particle strength compared to predictions of the shell model over a wide neutron-to-proton asymmetry range. The combined reduction factors show a weak or no dependence on isospin asymmetry, in contrast to the strong dependency reported in nucleon-removal reactions induced by nuclear targets at lower energies. However, the reduction factors for (p, 2p) are found to be 'significantly smaller than for (p, pn) reactions for all investigated nuclei. (C) 2019 The Authors. Published by Elsevier B.V.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01
2019
2019-01-01
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/20.500.14352/13788
url https://hdl.handle.net/20.500.14352/13788
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 Elsevier Science BV
publisher.none.fl_str_mv Elsevier Science BV
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 15.301629

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