Iron-cross-section validation by analysis of the leakage spectrum of 252Cf fission neutrons from iron spheres

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We have analyzed the 237Np/238U fission-rate ratio outside an iron sphere in which a 252Cf source is placed at the center, measured at NIST, and the leakage spectrum from a similar assembly, measured at NRI (near Prague). The experimental results were compared with the corresponding calculations, respectively based on the ENDF/B-IV, -V and -VI libraries. We found indeed that the newer the library, the better the agreement between experiment and calculation. Yet, even for ENDF/B-VI, the calculated values still differ from the experimental ones by more than the reported standard deviations of the latter.
Original languageEnglish
Title of host publicationConference Proceedings : International Conference on Nuclear Data for Science and Technology, Trieste, 19-24 May 1997
EditorsG. Reffo, A. Ventura, C. Grandi
Place of PublicationBologna, Italy
Publisher Italian Physical Society
Pages1119 - 21
Number of pages3
ISBN (Print)9788877941145
StatePublished - 1998

Publication series

NameItalian Physical Society conference proceedings

Bibliographical note

<sup>252</sup>Cf;fission neutrons;<sup>237</sup>Np/<sup>238</sup>U fission-rate ratio;Fe spheres;ENDF/B-IV;ENDF/B-V;ENDF/B-VI;


  • neutron spectra
  • nuclei with mass number 220 or higher
  • spontaneous fission


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