Nuclear Decay Data for the International Reactor Dosimetry Library for Fission and Fusion (IRDFF): Updated Evaluations of the Half-Lives and Gamma Ray Intensities

Abstract

Abstract. Updated evaluations of the half-lives and prominent gamma ray intensities have been presented for 20 radionuclides -dosimetry reaction residuals. The new values of these decay characteristics recommended for the IRDFF library were obtained using the approaches and methodology adopted by the working group of the Decay Data Evaluation Project (DDEP) cooperation. The experimental data published up to 2014 were taken into account in updated evaluations. The list of radionuclides includes

Decay Data Evaluation Project (DDEP): Updated evaluation of the 133Ba, 140Ba, 140La and 141Ce decay characteristics

“…The uncertainty assigned to these average values is either greater than or equal to the smallest uncertainty of the values used to calculate the average. This uncertainty of the best result ("smallest experimental uncertainty") reflects the type B standard uncertainty (systematic error of the method) and the recommended uncertainty cannot be less than this value [2,9,12].…”

“…More detailed information is given in the comments for 140 Ba and 140 La on the DDEP web site [7] and Ref. [12].…”