Open Access
ND 2007
Article Number 175
Number of page(s) 4
Section Thermal and resonance range
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07682

On the treatment of neutron scattering in the resonance range

R. Dagan1, J. Rowlands1, A. Courcelle2 and C.R. Lubitz3

1  Institute for Reactor Safety, Forschungszentrum Karlsruhe, Postfach 3640, 76021 Karlsruhe, Germany
2  CEA/Cadarache, DEN/DEC/SESC/LSC, 13108 Saint-Paul-lez-Durance, France
3  Knolls Atomic Power Laboratory, Schenectady, NY, USA

Published online: 21 May 2008

An improved double-differential resonance-dependent scattering kernel is presented and its impact on criticality, Doppler Effect, absorption, and inventory of heavy isotopes for a typical unit cell is confirmed again to be significant. The influence of solid state effects is investigated. The way the resonant crystal lattice model based on a 4-point correlation function differs from the free gas scattering kernel is discussed and the differences are shown to be small.

© CEA 2008