Applications of TAGS data in beta decay energies and decay heat calculations

Pham, N. S.*; Katakura, Junichi

The recent data of beta-decay intensity measured by using the total absorption -ray spectrometer (TAGS), for several fission products (FP), has been applied for calculations of the average energies and spectra, and decay heat summations. The calculations were performed based on the Gross theory of beta decay, in which the beta strength functions were experimentally derived from TAGS data. The deviations of decay heat power predictions from the original decay data of JENDL Decay Data File 2000, when applying the present values of average energies, were investigated. New estimations of decay energy data for La and Cs are proposed.