M. Bacak, M. Aiche, G. Belier, E. Berthoumieux, M. Diakaki, E. Dupont, F. Gunsing, H. Leeb, E. Griesmayer, E. Jericha, P. Kavrigin, C. Weiß, -. n_TOF Collaboration et al.:
"Preliminary results on the 233U capture cross section and alpha ratio measured at n_TOF (CERN) with the fission tagging technique";
EPJ Web of Conferences, 211 (2019), 03007; S. 1 - 9.

Kurzfassung englisch:
233U is of key importance among the fissile nuclei in the Th-U fuel cycle. A particularity of 233U is its small neutron capture cross-section, which is on average about one order of magnitude lower than the fission cross-section. The accuracy in the measurement of the 233U capture cross-section depends crucially on an efficient capture-fission discrimination, thus a combined set-up of fission and γ-detectors is needed. A measurement of the 233U capture cross-section and capture-to-fission ratio was performed at the CERN n_TOF facility. The Total Absorption Calorimeter (TAC) of n_TOF was employed as γ-detector coupled with a novel compact ionization chamber as fission detector. A brief description of the experimental set-up will be given, and essential parts of the analysis procedure as well as the preliminary response of the set-up to capture are presented and discussed.

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