ENDF/B-VI

For the past 25 years, the United States Department of Energy has sponsored a cooperative program among its laboratories, contractors and university research programs to produce an evaluated nudear data library which would be application independent and universally accepted. The prod­ uct of this cooperative activity is the ENDF IB evaluated nudear data file. After approximately eight years of development, a new version of the data file, ENDF IB- VI has been released. The essential features of this evaluated data library are described in this paper. (evaluated nudear data, ENDF IB, nudear reactions)