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The 233U, 235U and 239Pu and 241Pu (n,f) cross-sections have been measured at the Geel linear accelerator, down to 2 meV neutron energy, using a liquid nitrogen cooled methane moderator. The 6Li(n,alpha)t reaction was used for the neutron flux determination. These new results considerably enlarge and improve the sigma(f)(E)-database in the subthermal region. Hence more reliable values for the Westcott g(f)-factor and its temperature dependency can be obtained. Reactor parameters such as the temperature coefficient of reactivity can be calculated more accurately.

Additional information

Authors: WAGEMANS C, University of Gent, Nuclear Physics Laboratory (BE);SCHILLEBEECKX P, JRC Ispra (IT);DERUYTTER A J, JRC Geel (BE);BARTHÉLÉMY R, JRC Geel (BE)
Bibliographic Reference: Paper presented: International Conference on the Physics of Reactors : Operation, Design and Computations, Marseilles (FR), April 23-26, 1990
Availability: Available from (1) as Paper EN 35288 ORA
Record Number: 199011556 / Last updated on: 1994-12-02
Original language: en
Available languages: en