Integral data testing of ENDF/B fission-product data and comparisons of ENDF/B with other fission product data files

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Three experiments (one from Oak Ridge and two from Los Alamos), in which samples of /sup 235/U and /sup 238/Pu were irradiated with thermal neutrons and either the total, gamma-ray, or gamma- and beta-ray fission product decay-energies were measured as functions of cooling time, were selected for comparisons with calculations made using four different fission product data files. The data files used were (1) the ENDF/B-IV fission product file, (2) the ENDF/B-V fission product file, (3) a file derived by substituting decay energies from JNDC into the ENDF/B-V file, and (4) a file derived by substituting decay-energies and spectra from ... continued below

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Pages: 114

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LaBauve, R.J.; England, T.R. & George, D.C. November 1, 1981.

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Three experiments (one from Oak Ridge and two from Los Alamos), in which samples of /sup 235/U and /sup 238/Pu were irradiated with thermal neutrons and either the total, gamma-ray, or gamma- and beta-ray fission product decay-energies were measured as functions of cooling time, were selected for comparisons with calculations made using four different fission product data files. The data files used were (1) the ENDF/B-IV fission product file, (2) the ENDF/B-V fission product file, (3) a file derived by substituting decay energies from JNDC into the ENDF/B-V file, and (4) a file derived by substituting decay-energies and spectra from the UK data file into the ENDF/B-V file. Direct summation calculations and spectral comparisons of the experiments were made using these data files as input, and both types of calculational analyses yielded the same results; namely, all data files are deficient, but the JNDC-ENDF/B-V results for the gamma- and beta-ray total decay-energy agree best with experiments. In addition, spectral comparisons with experiment generally indicate that calculated gamma-ray decay-energies are relatively high for early cooling times and small gamma-ray energies; they are low for early cooling times and large gamma-ray energies. The opposite is somewhat the case for the beta-ray decay energies; that is, the calculations are generally low for small beta-ray energies and high for large energies.

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Pages: 114

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NTIS, PC A06/MF A01.

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  • Other: DE82010041
  • Report No.: LA-9090-MS
  • Report No.: ENDF-320
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/5263159 | External Link
  • Office of Scientific & Technical Information Report Number: 5263159
  • Archival Resource Key: ark:/67531/metadc1071641

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 1, 1981

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • May 29, 2018, 6:51 p.m.

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LaBauve, R.J.; England, T.R. & George, D.C. Integral data testing of ENDF/B fission-product data and comparisons of ENDF/B with other fission product data files, report, November 1, 1981; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1071641/: accessed August 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.