Abstract
This paper presents the comparison between the total delayed neutron yields (νd¯) calculated and the recommended values proposed by Tuttle, the experimental data of Waldo and those of Benedetti. These data are given for thermal, fast, and high energy fission ranges. The calculation of total delayed neutron yields is performed either by the NJOY nuclear data processing system or by the summation method. The decay data found in the various evaluations as the delayed neutron branching ratios (Pn) and the cumulative fission yields (CY) can also be validated by delayed neutron yield calculation using the summation method. In the first method, where the treatment is performed by the NJOY system, the general purpose evaluation files (JEFF-3, JEF-2, ENDF/B-VII.0 and ENDF/B-VI.4 were considered. In the summation calculation, the data used are the delayed neutron branching ratios (also called delayed neutron emission probabilities) and the cumulative fission yields that are given for thermal, fast, high energy fission and spontaneous fission. These data are found in the Radioactive Decay Data and Fission Yield Data files (File 8) of nuclear data evaluations. In this study, we also perform a benchmark calculation with various libraries: JEF-2.2, JEFF3.1.1, ENDF/B-VII.0, ENDF/B-VII.1 and JENDL/FP-2011.
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