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U.S. Department of Energy
Office of Scientific and Technical Information

The file of evaluated decay data in ENDF/B

Conference · · Transactions of the American Nuclear Society; (United States)
OSTI ID:5855852
 [1]
  1. Idaho National Engineering Lab., Idaho Falls (United States)

One important application of nuclear decay data is the Evaluated Nuclear Data File/B (ENDF/B), the base of evaluated nuclear data used in reactor research and technology activities within the United States. The decay data in the Activation File (158 nuclides) and the Actinide File (108 nuclides) excellently represent the current status of this information. In particular, the half-lives and gamma and alpha emission probabilities, quantities that are so important for many applications, of the actinide nuclides represent a significant improvement over those in ENDF/B-V because of the inclusion of data produced by an International Atomic Energy Agency Coordinated Research Program. The Fission Product File contains experimental decay data on {approximately}510 nuclides, which is essentially all for which a meaningful number of data are available. For the first time, delayed-neutron spectra for the precursor nuclides are included. Some hint of problems in the fission product data base is provided by the gamma decay heat following a burst irradiation of {sup 239}Pu.

OSTI ID:
5855852
Report Number(s):
CONF-910603--
Journal Information:
Transactions of the American Nuclear Society; (United States), Journal Name: Transactions of the American Nuclear Society; (United States) Vol. 63; ISSN TANSA; ISSN 0003-018X
Country of Publication:
United States
Language:
English