Scope of JENDL-3

Japanese Nuclear Data Committee (JNDC) and JAERI Nuclear Data Center (JAERI/NDC) have continued to make efforts to compile Japanese Evaluated Nuclear Data Library (JENDL) and to improve it for extensive use in various fields. The first version of JENDL, JENDL-1, was released at 1977, which was made mainly for fast breeder reactors. The second version, JENDL-2, is now being compiled to use it for thermal reactors, shielding problems, fusion researches, fuel-cycle problems and safety analyses as well as for fast breeders. JNDC felt that further extension and improvements of JENDL might be necessary, and organized an ad-hoc committee in March 1980 for preparation of the third version of JENDL, JENDL-3. The ad-hoc committee has made survey of important neutron data and has discussed them from the viewpoint of extensive data use in various fields of endeavors. meanwhile, the committee held small meetings to listen to various opinions of specialists in the field of shielding, fast breeder, nuclear fusion and accelerator breeding, and made a questionnaire survey for JENDL-3. Considering the results of the survey and estimating the manpower for the JENDL-3 evaluation work, the committee proposes to JNDC the following recommendation for the JENDL-3 plan. (author)