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Cadmium has been used historically as an important component of integralexperiments because of its high thermal neutron absorption cross section.Correct interpretation of such experiments depends on accurate differentialneutron cross section measurements. The 60 MeV electron accelerator at theGaerttner LINAC Center was used to generate neutrons for neutron capture andtotal cross section measurements of natural Cd. Measurements were performed inthe thermal and epithermal resonance range with sample thicknesses ranging from1 x 10-4 to 4 x 10-2 atoms per barn. A full resonance region analysis wasperformed in order to determine the thermal cross sections and resonanceintegrals of the cadmium isotopes. The Bayesian R-Matrix code SAMMY 8.0 wasused to shape fit the data and extract the resonance parameters. Resonanceparameter and cross section uncertainties were determined from their primarycomponents: transmission background, capture normalization, experimentalresolution function, burst width, sample thickness, and counting statistics.The experiments were analyzed for consistency within the measured capture andtransmission using multiple sample thicknesses. Results are compared topreviously published measurements and evaluated nuclear libraries. No majorchanges to the thermal cross section or the first resonance in Cd113 wereidentified from the consensus achieved from measurements and evaluations overthe past decade.

Cadmium Resonance Parameters from Neutron Capture and Transmission Measurements at the RPI LINAC