The neutron-induced fission cross-section of 233U has been measured at the CERN n_TOF facility relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed with a fast ionization chamber for the detection of the fission fragments and to discriminate against α -particles from the natural radioactivity of the samples. The high instantaneous flux and the low background of the n_TOF facility result in data with uncertainties of ≈ 3% , which were found in good agreement with previous experiments. The high quality of the present results allows to improve the evaluation of the 233U (n,f) cross-section and, consequently, the design of energy systems based on the Th/U cycle.

Neutron-induced fission cross-sectionof 233-U in the energy range 0.5<20 MeV

MASSIMI, CRISTIAN;VANNINI, GIANNI;
2011

Abstract

The neutron-induced fission cross-section of 233U has been measured at the CERN n_TOF facility relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed with a fast ionization chamber for the detection of the fission fragments and to discriminate against α -particles from the natural radioactivity of the samples. The high instantaneous flux and the low background of the n_TOF facility result in data with uncertainties of ≈ 3% , which were found in good agreement with previous experiments. The high quality of the present results allows to improve the evaluation of the 233U (n,f) cross-section and, consequently, the design of energy systems based on the Th/U cycle.
The n_TOF Collaboration; F. Belloni; M. Calviani; N. Colonna; P. Mastinu; P. M. Milazzo; U. Abbondanno; G. Aerts; H. Álvarez; F. Alvarez-Velarde; S. Andriamonje; J. Andrzejewski; L. Audouin; G. Badurek; P. Baumann; F. Bečvář; E. Berthoumieux; F. Calviño; D. Cano-Ott; R. Capote; C. Carrapiço; P. Cennini; V. Chepel; E. Chiaveri; G. Cortes; A. Couture; J. Cox; M. Dahlfors; S. David; I. Dillmann; C. Domingo-Pardo; W. Dridi; I. Duran; C. Eleftheriadis; M. Embid-Segura; A. Ferrari; R. Ferreira-Marques; K. Fujii; W. Furman; I. Goncalves; E. Gonzalez-Romero; A. Goverdovski; F. Gramegna; C. Guerrero; F. Gunsing; B. Haas; R. Haight; M. Heil; A. Herrera-Martinez; M. Igashira; E. Jericha; F. Käppeler; Y. Kadi; D. Karadimos; D. Karamanis; M. Kerveno; P. Koehler; E. Kossionides; M. Krtička; C. Lamboudis; H. Leeb; A. Lindote; I. Lopes; M. Lozano; S. Lukic; J. Marganiec; S. Marrone; T. Martınez; C. Massimi; M. H. Meaze; A. Mengoni; C. Moreau; M. Mosconi; F. Neves; H. Oberhummer; S. O’Brien; J. Pancin; C. Papachristodoulou; C. Papadopoulos; C. Paradela; N. Patronis; A. Pavlik; P. Pavlopoulos; L. Perrot; M. T. Pigni; R. Plag; A. Plompen; A. Plukis; A. Poch; J. Praena; C. Pretel; J. Quesada; T. Rauscher; R. Reifarth; M. Rosetti; C. Rubbia; G. Rudolf; P. Rullhusen; J. Salgado; C. Santos; L. Sarchiapone; I. Savvidis; C. Stephan; G. Tagliente; J. L. Tain; L. Tassan-Got; L. Tavora; R. Terlizzi; G. Vannini; P. Vaz; A. Ventura; D. Villamarin; M. C. Vincente; V. Vlachoudis; R. Vlastou; F. Voss; S. Walter; M. Wiescher; K. Wisshak
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/96463
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