dc.creator | Balibrea Correa, J. | es |
dc.creator | Mendoza, E. | es |
dc.creator | Cano Ott, D. | es |
dc.creator | González, E. | es |
dc.creator | Capote, R. | es |
dc.creator | Krticka, M. | es |
dc.creator | Cortés Giraldo, Miguel Antonio | es |
dc.creator | Lerendegui Marco, Jorge | es |
dc.creator | Praena Rodríguez, Javier | es |
dc.creator | Quesada Molina, José Manuel | es |
dc.creator | Sabaté Gilarte, Marta | es |
dc.creator | Žugec, P. | es |
dc.date.accessioned | 2022-02-14T12:54:58Z | |
dc.date.available | 2022-02-14T12:54:58Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Balibrea Correa, J., Mendoza, E., Cano Ott, D., González, E., Capote, R., Krticka, M.,...,Žugec, P. (2020). Measurement of the α ratio and (n, γ) cross section of 235U from 0.2 to 200 eV at n_TOF. Physical Review C, 102, 044615. | |
dc.identifier.issn | 2469-9985 | es |
dc.identifier.issn | 2469-9993 | es |
dc.identifier.uri | https://hdl.handle.net/11441/129944 | |
dc.description.abstract | We measured the neutron capture-to-fission cross-section ratio (α ratio) and the capture cross section of 235U
between 0.2 and 200 eV at the n_TOF facility at CERN. The simultaneous measurement of neutron-induced
capture and fission rates was performed by means of the n_TOF BaF2 Total Absorption Calorimeter (TAC), used
for detection of γ rays, in combination with a set of micromegas detectors used as fission tagging detectors.
The energy dependence of the capture cross section was obtained with help of the 6
Li(n,t) standard reaction
determining the n_TOF neutron fluence; the well-known integral of the 235U(n, f ) cross section between 7.8
and 11 eV was then used for its absolute normalization. The α ratio, obtained with slightly higher statistical
fluctuations, was determined directly, without need for any reference cross section. To perform the analysis
of this measurement we developed a new methodology to correct the experimentally observed effect that the
probabilities of detecting a fission reaction in the TAC and the micromegas detectors are not independent. The
results of this work have been used in a new evaluation of 235U performed within the scope of the Collaborative
International Evaluated Library Organisation (CIELO) Project, and are consistent with the ENDF/B-VIII.0 and
JEFF-3.3 capture cross sections below 4 eV and above 100 eV. However, the measured capture cross section is
on average 10% larger between 4 and 100 eV. | es |
dc.description.sponsorship | Ministerio de Economía, Industria y Competitividad de España. FPA2014-53290-C2-1, FPA2016-76765- P y FPA2017-82647-P | es |
dc.description.sponsorship | 7º Programa Marco CHANDA de la Comisión Europea. FP7-605203 | es |
dc.format | application/pdf | es |
dc.format.extent | 18 p. | es |
dc.language.iso | eng | es |
dc.publisher | American Physical Society | es |
dc.relation.ispartof | Physical Review C, 102, 044615. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Measurement of the α ratio and (n, γ) cross section of 235U from 0.2 to 200 eV at n_TOF | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | FPA2014-53290-C2-1 | es |
dc.relation.projectID | FPA2016-76765- P | es |
dc.relation.projectID | CHANDA FP7-605203 | es |
dc.relation.publisherversion | https://doi.org/10.1103/PhysRevC.102.044615 | es |
dc.identifier.doi | 10.1103/PhysRevC.102.044615 | es |
dc.journaltitle | Physical Review C | es |
dc.publication.volumen | 102 | es |
dc.publication.initialPage | 044615 | es |
dc.contributor.funder | Ministerio de Economía. España | es |
dc.contributor.funder | European Union (UE) | es |
dc.contributor.funder | FPA2017-82647-P | es |