Artículo
Neutron-induced fission cross section of 234 U measured at the CERN n_TOF facility
Autor/es | Karadimos, D.
Vlastou, R. Ioannidis, K. Demetriou, P. Diakaki, M. Vlachoudis, V. Wisshak, K. Capote, Roberto Lozano Leyva, Manuel Luis Quesada Molina, José Manuel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2014 |
Fecha de depósito | 2017-04-05 |
Publicado en |
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Resumen | 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 ... 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 β-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. |
Cita | Karadimos, D., Vlastou, R., Ioannidis, K., Demetriou, P., Diakaki, M., Vlachoudis, V.,...,Quesada Molina, J.M. (2014). Neutron-induced fission cross section of 234 U measured at the CERN n_TOF facility. Physical Review C - Nuclear Physics, 89 (4), 044606-1-044606-11. |
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