High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN

The U238 to U235 fission cross section ratio has been determined at n_TOF up to ˜1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncert...

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Autores: Paradela, C., Calviani, Marco, Tarrío, D., Calviño Tavares, Francisco|||0000-0002-7198-4639, Cortés Rossell, Guillem Pere|||0000-0002-3648-5826, Gómez Hornillos, María Belén, Pretel Sánchez, Carme|||0000-0001-6199-3366, Riego Pérez, Albert|||0000-0001-8571-1546
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/28483
Acceso en línea:https://hdl.handle.net/2117/28483
https://dx.doi.org/10.1103/PhysRevC.91.024602
Access Level:acceso abierto
Palabra clave:Neutrons
Nuclear energy
Cross section
Neutron
Fission
U-238
U-235
Fissió nuclear
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
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spelling High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERNParadela, C.Calviani, MarcoTarrío, D.Calviño Tavares, Francisco|||0000-0002-7198-4639Cortés Rossell, Guillem Pere|||0000-0002-3648-5826Gómez Hornillos, María BelénPretel Sánchez, Carme|||0000-0001-6199-3366Riego Pérez, Albert|||0000-0001-8571-1546NeutronsNuclear energyCross sectionNeutronFissionU-238U-235Fissió nuclearNeutronsEnergia nuclearÀrees temàtiques de la UPC::Energies::Energia nuclearThe U238 to U235 fission cross section ratio has been determined at n_TOF up to ˜1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3–4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ˜1 GeV.20152015-02-0920152015-07-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/28483https://dx.doi.org/10.1103/PhysRevC.91.024602reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 605203 solving CHAllenges in Nuclear DAtaopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/284832026-05-27T15:37:01Z
dc.title.none.fl_str_mv High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
title High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
spellingShingle High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
Paradela, C.
Neutrons
Nuclear energy
Cross section
Neutron
Fission
U-238
U-235
Fissió nuclear
Neutrons
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
title_short High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
title_full High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
title_fullStr High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
title_full_unstemmed High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
title_sort High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN
dc.creator.none.fl_str_mv Paradela, C.
Calviani, Marco
Tarrío, D.
Calviño Tavares, Francisco|||0000-0002-7198-4639
Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
Gómez Hornillos, María Belén
Pretel Sánchez, Carme|||0000-0001-6199-3366
Riego Pérez, Albert|||0000-0001-8571-1546
author Paradela, C.
author_facet Paradela, C.
Calviani, Marco
Tarrío, D.
Calviño Tavares, Francisco|||0000-0002-7198-4639
Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
Gómez Hornillos, María Belén
Pretel Sánchez, Carme|||0000-0001-6199-3366
Riego Pérez, Albert|||0000-0001-8571-1546
author_role author
author2 Calviani, Marco
Tarrío, D.
Calviño Tavares, Francisco|||0000-0002-7198-4639
Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
Gómez Hornillos, María Belén
Pretel Sánchez, Carme|||0000-0001-6199-3366
Riego Pérez, Albert|||0000-0001-8571-1546
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Neutrons
Nuclear energy
Cross section
Neutron
Fission
U-238
U-235
Fissió nuclear
Neutrons
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
topic Neutrons
Nuclear energy
Cross section
Neutron
Fission
U-238
U-235
Fissió nuclear
Neutrons
Energia nuclear
Àrees temàtiques de la UPC::Energies::Energia nuclear
description The U238 to U235 fission cross section ratio has been determined at n_TOF up to ˜1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3–4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ˜1 GeV.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-02-09
2015
2015-07-01
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/2117/28483
https://dx.doi.org/10.1103/PhysRevC.91.024602
url https://hdl.handle.net/2117/28483
https://dx.doi.org/10.1103/PhysRevC.91.024602
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 605203 solving CHAllenges in Nuclear DAta
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.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 15,300719

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