Title: Development of an experimental set-up for the measurement of neutron-induced fission and capture cross sections of radioactive fissile nuclei
Authors: COMPANIS I.AICHE MouradMATHIEU L.SCHILLEBEECKX PeterHEYSE JANBARREAU G.CZAJKOWSKI C.DUCASSE Q.GUNSING F.JURADO B.KESSEDJIAN G.MATARRANZ J.PLOMPEN ArjanTSEKHANOVICH I.
Citation: EPJ Web of Conferences vol. 62 p. 1-4
Publisher: EDP Sciences
Publication Year: 2013
JRC N°: JRC88535
ISSN: 2100-014X
URI: http://dx.doi.org/10.1051/epjconf/20136205007
http://publications.jrc.ec.europa.eu/repository/handle/JRC88535
DOI: 10.1051/epjconf/20136205007
Type: Articles in periodicals and books
Abstract: A new experimental set-up for a simultaneous measurement of neutron induced capture and fission cross sections was designed, assembled and optimized. The measurements will be performed at GEel LINear Accelerator (GELINA) neutron time-of-flight facility in Belgium, where neutron cross sections can be measured over a wide energy range with high energy resolution. The fission events detector consists of a dedicated multi-plate high efficiency fission ionization chamber (IC). The γ-rays produced in capture reaction are detected by an efficient array of C6D6 scintillators. Fission γ-rays events are distinguished from capture events by the anticoincidence signals from the IC and the C6D6 detectors. For the undetected fission events a correction has to be applied with respect to the efficiency of the IC that should be high and known with a high precision. Another important issue is the good separation between fission-fragment (FF) and the high alpha pile-up. The performances of the IC during test experiments are presented, focusing in particular on the detection efficiency.
JRC Directorate:Health, Consumers and Reference Materials

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