Measurement of the 236U(n,f) Cross Section in the Neutron Energy Range from 0.5 eV up to 25 keV
The 236U(n,f) cross section has been measured in the energy range from 0.5 eV to 25 keV at the GELINA neutron time-of-flight facility of the Institute for Reference Materials and Measurements in Geel, Belgium. A highly enriched 236U sample was mounted back-to-back with a 10B sample in the centre of a Frisch-gridded ionization chamber, hence realizing a 2p detection geometry. A 235U(n,f) cross section control measurement was performed in the same experimental conditions. Special attention has been given to the fission resonance integral If and to the strongest resonance at 5.45 eV, for which a resonance analysis has been performed yielding Gf = 1.7 µeV. Both values are highly overestimated in the literature.
WAGEMANS Cyriel;
DE SMET Liesbeth;
VERMOTE S.;
VAN GILS Jaak;
SEROT Olivier;
HEYSE J.;
2008-12-16
AMER NUCLEAR SOCIETY
JRC41882
0029-5639,
https://publications.jrc.ec.europa.eu/repository/handle/JRC41882,
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