Open Access
ND 2007
Article Number 174
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:07558

Resonance data for self-shielding problems

N. Janeva, A. Lukyanov and N. Koyumdjieva

Institute for Nuclear Research and Nuclear Energy, 1784 Sofia, Bulgaria

Published online: 21 May 2008

The investigation of resonance self-shielding effects in macroscopic medium is important for the physics of nuclear reactors and shielding. The degree of consistency of evaluated resonance cross sections data and the requirements to the accurate presentation of self-shielding effects can be estimated by using the simplest benchmark data for resonance averaged functions of neutron transmission and self-indication cross section at arbitrary filter thickness n. We report the developed (for nonfissile nuclei) methods for description of cross sections and their functionals in the unresolved resonance range that aim to estimate properly the self-shielding effects and reveal the resonance structure in averaging intervals (groups).

© CEA 2008