Determination of the 338 eV, 1098 eV and 1370 eV s-wave resonance parameters for neutron induced reactions of 55Mn at GELINA

Abstract

In this report new values for the resonance parameters of the 338 eV, 1098 eV and 1370 eV s-wave resonances of 55Mn are presented. The parameters were derived from a resonance shape analysis of transmission and capture data resulting from measurements at the time-of-flight facility GELINA. Special samples have been prepared to optimize the transmission at the resonance dips, to avoid the impact of sample inhomogeneities and to reduce bias effects due to multiple interaction events and the normalization of the capture data. The parameters have been adopted in an ENDF-6 compatible file which has been tested and implemented in the next release of the Joint Evaluated Fission and Fusion data library, i.e. JEFF-3.2, which is maintained by the Nuclear Energy Agency of the OECD.