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Título:	Neutron-induced fission cross section of U-234 measured at the CERN n_TOF facility
Autor/a:	Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme
Otros autores:	Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Abstract:	The neutron-induced fission cross section of 234U has been measured at the CERN n_TOF facility relative to the standard fission cross section of 235U from 20 keV to 1.4 MeV and of 238U from 1.4 to 200 MeV. A fast ionization chamber (FIC) was used as a fission fragment detector with a detection efficiency of no less than 97%. The high instantaneous flux and the low background characterizing the n_TOF facility resulted in wide-energy-range data (0.02 to 200 MeV), with high energy resolution, high statistics, and systematic uncertainties bellow 3%. Previous investigations around the energy of the fission threshold revealed structures attributed to ß-vibrational levels, which have been confirmed by the present measurements. Theoretical calculations have been performed, employing the TALYS code with model parameters tuned to fairly reproduce the experimental data
Materia(s):	-Àrees temàtiques de la UPC::Energies::Energia nuclear -Neutrons -Neutron -Fission -Cross section -TOF -Neutrons
Derechos:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Tipo de documento:	Artículo - Versión publicada Artículo
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