The sensitivity of keff of metallic assemblies to the parametric representation of the fission and the inelastic scattering spectra

H. Nissimov, J.J. Wagschal

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

Abstract

The fission spectrum and the inelastic scattering spectrum of ENDF/B-IV 239Pu data were modified. The variations of keff and of the leakage spectrum induced by these modifications were calculated for a bare 239Pu critical sphere, as a typical metallic assembly. In certain cases these modifications lead to substantial variations in keff. Guides for reasonable changes in the representation of the spectra were obtained. The variations in keff and in the leakage spectrum caused by these reasonable changes were found to be within their experimental errors.
Original languageEnglish
Title of host publicationNuclear Cross Sections and Technology
Subtitle of host publicationProceedings of a Conference
EditorsSchrack R.A., Bowman C.D.
Place of PublicationWashington, DC, USA
PublisherU.S. Government Printing Office
Pages389 - 91
Number of pages3
VolumeI
StatePublished - 1975

Publication series

NameNational Bureau of Standards Special Publication
Number425

Bibliographical note

fission spectrum;inelastic scattering spectrum;ENDF/B-IV <sup>239</sup>Pu data;k<sub>eff</sub>;leakage spectrum;metallic assembly;

Keywords

  • fission reactor fuel
  • fission reactor theory and design
  • neutron transport theory
  • nuclei with mass number 220 or higher

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