Consistency among Integral Measurements of Aggreager Decay Heat Power

摘要

Persisting iscrepancies between summation calculations and integral measurements force us to assume large uncertainties in the recommended decay heat power. In this paper, we develop a hybrid method to calculate the decay heat power of a fissioing system from those of different fissioning systems. Then, this method is applied to examine consistency among measured decay heat powers of `232Th, ~233U, ~235U, ~238U and `239Pu at YAYOI. The consistency among the measured values are found to be satisfied for the beta component and fairly well for the gamma component, except for cooling times longer than 4000 s.