Status and evaluation methods of JENDL Fusion File and JENDL PKA/KERMA File

The status of evaluated nuclear data in the JENDL Fusion File and PKA/KERMA File is presented. The JENDL Fusion File was prepared in order to improve the quality of the JENDL-3.1 data especially on the double-differential cross sections (DDXs) of secondary neutrons and gamma-ray production cross sections, and to provide DDXs of secondary charged particles (p, d, t, 3He and α-particle) for the calculation of PKA and KERMA factors. The JENDL Fusion File contains evaluated data of 26 elements ranging from Li to Bi. The data in JENDL Fusion File reproduce the measured data on neutron and charged-particle DDXs and also on gamma-ray production cross sections. Recoil spectra in PKA/KERMA File were calculated from secondary neutron and charged-particle DDXs contained in the Fusion File with two-body reaction kinematics. The data in the JENDL Fusion File and PKA/KERMA File were compiled in ENDF-6 format with an MF = 6 option to store the DDX data.