Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV

The aim of this work is to provide a precise and accurate measurement of the 238U(n, gamma) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In par...

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Autores: Mingrone, Federica, Massimi, Cristian, Vannini, Gianni, Calviño Tavares, Francisco|||0000-0002-7198-4639, Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/103671
Acesso em linha:https://hdl.handle.net/2117/103671
https://dx.doi.org/10.1103/PhysRevC.95.034604
Access Level:acceso abierto
Palavra-chave:Neutrons
Nuclear energy
Neutron
CERN
nTOF
Cross section
Nuclear
Reaction
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
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spelling Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keVMingrone, FedericaMassimi, CristianVannini, GianniCalviño Tavares, Francisco|||0000-0002-7198-4639Cortés Rossell, Guillem Pere|||0000-0002-3648-5826NeutronsNuclear energyNeutronCERNnTOFCross sectionNuclearReactionNeutronsEnergia nuclearÀrees temàtiques de la UPC::Energies::Energia nuclearThe aim of this work is to provide a precise and accurate measurement of the 238U(n, gamma) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238U(n, gamma) measurements performed at the n_TOF CERN facility are presented in this work. The gamma-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.AMER PHYSICAL SOC20172017-03-1020172017-04-24journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/103671https://dx.doi.org/10.1103/PhysRevC.95.034604reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengMinisterio de Ciencia e Innovación http://doi.org/10.13039/501100004837 FPA2011-28770-C03-03 DATOS NUCLEARES PARA FISICA NUCLEAR E INGENIERIA NUCLEAREuropean Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 249671 Accurate Nuclear Data for nuclear Energy Sustainabilityopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1036712026-05-27T15:37:01Z
dc.title.none.fl_str_mv Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
title Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
spellingShingle Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
Mingrone, Federica
Neutrons
Nuclear energy
Neutron
CERN
nTOF
Cross section
Nuclear
Reaction
Neutrons
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
title_short Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
title_full Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
title_fullStr Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
title_full_unstemmed Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
title_sort Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
dc.creator.none.fl_str_mv Mingrone, Federica
Massimi, Cristian
Vannini, Gianni
Calviño Tavares, Francisco|||0000-0002-7198-4639
Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
author Mingrone, Federica
author_facet Mingrone, Federica
Massimi, Cristian
Vannini, Gianni
Calviño Tavares, Francisco|||0000-0002-7198-4639
Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
author_role author
author2 Massimi, Cristian
Vannini, Gianni
Calviño Tavares, Francisco|||0000-0002-7198-4639
Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
author2_role author
author
author
author
dc.subject.none.fl_str_mv Neutrons
Nuclear energy
Neutron
CERN
nTOF
Cross section
Nuclear
Reaction
Neutrons
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
topic Neutrons
Nuclear energy
Neutron
CERN
nTOF
Cross section
Nuclear
Reaction
Neutrons
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
description The aim of this work is to provide a precise and accurate measurement of the 238U(n, gamma) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238U(n, gamma) measurements performed at the n_TOF CERN facility are presented in this work. The gamma-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-03-10
2017
2017-04-24
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/103671
https://dx.doi.org/10.1103/PhysRevC.95.034604
url https://hdl.handle.net/2117/103671
https://dx.doi.org/10.1103/PhysRevC.95.034604
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación http://doi.org/10.13039/501100004837 FPA2011-28770-C03-03 DATOS NUCLEARES PARA FISICA NUCLEAR E INGENIERIA NUCLEAR
European Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 249671 Accurate Nuclear Data for nuclear Energy Sustainability
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/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
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv AMER PHYSICAL SOC
publisher.none.fl_str_mv AMER PHYSICAL SOC
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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