Title: Absolute and relative cross section measurements of 237Np(n,f) and 238U(n,f) at the National Physical Laboratory
Authors: SALVADOR-CASTINEIRA PAULAHAMBSCH FRANZ-JOSEFGÖÖK ALFVIDALI MARZIOHAWKES N.ROBERTS NEILTAYLOR GRAEME C.THOMAS DAVID
Citation: EPJ Web of Conferences vol. 146 p. 04050
Publisher: EDP Sciences
Publication Year: 2017
JRC N°: JRC103625
ISSN: 2100 014X
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC103625
DOI: 10.1051/epjconf/201714604050
Type: Articles in periodicals and books
Abstract: Cross section measurements in the fast energy region are being demanded as one of the key ingredients for modelling Generation-IV nuclear power plants. However, in facilities where there are no time-of-flight possibilities or it is not convenient to use them, using the 235U(n,f) cross section as a benchmark would require a careful knowledge of the room scatter in the experimental area. In this paper we present measurements of two threshold reactions, 238U and 237Np, that could become a standard between their fission threshold and 2.5 MeV, if the discrepancies shown in the evaluations and in some experimental data can be solved. The preliminary results are in agreement with the present ENDF/B-VII.1 evaluation.
JRC Directorate:Nuclear Safety and Security

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