Progress report about the photo-nuclear data evaluation activity in 1999

The present work is intended to continue the evaluation of the photonuclear cross-section for the main materials what were proposed by the 2nd CRP-Meeting on 'Compilation and Evaluation of Photonuclear Data for Applications' (23-26 June 1998, LANL, Los Alamos, USA). The general purpose of this research is to improve the theoretical methods for the calculations and the evaluations of the differential and integral photonuclear cross-sections in the wide excitation energy up to 20 MeV. On that base for the U-234, U-236, Pu-238, Pu-239, Pu-241 elements the evaluated data files were prepared. Some modifications were performed for the Th-232, U-233, U-235 and U-238 evaluated photonuclear data files. (author)