Published October 2011
NDS Staff Publication

Assessment of the unresolved resonance treatment for cross-section and covariance representation

Description

The report was issued by WPEC Subgroup 32, which investigates the methodologies used in the unresolved resonance region (URR) for cross-section and covariance representation. The objectives of the subgroup were to: - investigate the use of the Single-level Breit-Wigner formalism in the URR for fissile and fertile isotopes; - investigate URR parameter representation based on the LSSF = 0 or LSSF - 1 option; - report on teh URR resonance parameter interpolation issue; - report on the URR covariance representation.