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Investigation of the $^{240}$Pu(n,f) reaction at the n_TOF/EAR2 facility in the 9 meV-6 MeV range

n_TOF Collaboration; Stamatopoulos, A.; Tsinganis, A.; Colonna, N.; Kokkoris, M.; Vlastou, R.; Diakaki, M.; Žugec, P.; Schillebeeckx, P.; Gunsing, F.; Sabaté-Gilarte, M.; Barbagallo, M.; Aberle, O.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Bacak, M.; Balibrea, J.; Barros, S.; Bečvář, F.; Beinrucker, C.; ... mehr

Abstract:
Background: Nuclear waste management is considered amongst the major challenges in the field of nuclear energy. A possible means of addressing this issue is waste transmutation in advanced nuclear systems, whose operation requires a fast neutron spectrum. In this regard, the accurate knowledge of neutron-induced reaction cross sections of several (minor) actinide isotopes is essential for design optimization and improvement of safety margins of such systems. One such case is $^{240}$Pu, due to its accumulation in spent nuclear fuel of thermal reactors and its usage in fast reactor fuel. The measurement of the $^{240}$Pu(n,f) cross section was previously attempted at the CERN n_TOF facility EAR1 measuring station using the time-of-flight technique. Due to the low amount of available material and the given flux at EAR1, the measurement had to last several months to achieve a sufficient statistical accuracy. This long duration led to detector deterioration due to the prolonged exposure to the high α activity of the fission foils, therefore the measurement could not be successfully completed.

Purpose: It is aimed to determine whether it is feasible to study neutron-induced fission at n_TOF/EAR2 and provide data on the $^{240}$Pu(n,f) reaction in energy regions requested for applications.
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Verlagsausgabe §
DOI: 10.5445/IR/1000123394
Veröffentlicht am 10.09.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0556-2813, 1089-490X, 1538-4497, 2469-9985, 2469-9993, 2470-0002
KITopen-ID: 1000123394
HGF-Programm 51.03.04 (POF III, LK 01) Kosmische Strahlung Technologien
Erschienen in Physical review / C
Verlag American Physical Society (APS)
Band 102
Heft 1
Seiten Art.-Nr.: 014616
Nachgewiesen in Web of Science
Dimensions
Scopus
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