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isomers in 
CfOrlandi, R.; Makii, Hiroyuki; Nishio, Katsuhisa; Hirose, Kentaro; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Ito, Yuta; Suzaki, Fumi; Nagame, Yuichiro*; et al.
Physical Review C, 106(6), p.064301_1 - 064301_11, 2022/12
Times Cited Count：1 Percentile：30.99(Physics, Nuclear)Pham, N. S.*; Katakura, Junichi
JAEA-Research 2007-068, 53 Pages, 2007/10
JAEA-Research-2007-068.pdf:2.74MB
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.
Pham, N. S.*; Katakura, Junichi
JAEA-Data/Code 2007-018, 12 Pages, 2007/10
JAEA-Data-Code-2007-018.pdf:1.61MB
The precise knowledge of decay heat is one of the most important factors in safety design and operation of nuclear power facilities. Furthermore, decay heat data also play an important role in design of fuel discharges, fuel storage and transport flasks, and in spent fuel management and processing. In this study, a new application program, called DHP (Decay Heat Power program), has been developed for exact decay heat summation calculations, uncertainty analysis, and for determination of the individual contribution of each fission product. The analytical methods were applied in the program without any simplification or approximation, in which all of linear and non-linear decay chains, and 12 decay modes, including ground state and meta-stable states, are automatically identified, and processed by using a decay data library and a fission yield data file, both in ENDF/B-VI format. The window interface of the program is designed with optional properties which is very easy for users to run the code.
