Comparison of irradiated foil measurements with activation calculations and HPGe simulations |
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| Authors: | John J Goodell Christine M Egnatuk Stephen W Padgett Corey C Keith Todd A Bredeweg Norris K Harward Bryan B Bandong Kevin E Roberts Alice C Mignerey |
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| Institution: | 1.Department of Chemistry and Biochemistry,University of Maryland,College Park,USA;2.Nuclear and Chemical Sciences Division,Lawrence Livermore National Laboratory,Livermore,USA;3.Nuclear and Radiochemistry, Los Alamos National Laboratory,Los Alamos,USA |
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| Abstract: | Theoretical activation calculations for Fe, Ni, and stainless steel foils were compared against irradiated foil measurements from a critical assembly. Calculated/experiment values spanning 0.62–1.31 showed that the restricted approach used here is insufficient for experiment planning, with the collapsed cross-section being the primary source of error. The effect of decay time on gamma-ray spectroscopy measurement reliability was investigated using a Monte Carlo HPGe detector model. Simulations showed no correlation with decay time, absent interferences. Specific interferences for Fe-59 (Ni) and Co-60 (stainless steel) activation product ratios suggested optimal measurement windows having respective decay times of 9–11 days and 4–7 days. |
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