Issues in Neutron Cross Section Covariances Metadata

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Title

  • Main Title Issues in Neutron Cross Section Covariances

Creator

  • Author: Mattoon, C. M.
    Creator Type: Personal
  • Author: Oblozinsky, P.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Office of Nuclear Energy, Science, and Technology.
    Contributor Type: Organization
    Contributor Info: DOE - Nuclear Energy,Science, & Technology

Publisher

  • Name: Brookhaven National Laboratory
    Place of Publication: United States

Date

  • Creation: 2010-04-30

Language

  • English

Description

  • Content Description: We review neutron cross section covariances in both the resonance and fast neutron regions with the goal to identify existing issues in evaluation methods and their impact on covariances. We also outline ideas for suitable covariance quality assurance procedures.We show that the topic of covariance data remains controversial, the evaluation methodologies are not fully established and covariances produced by different approaches have unacceptable spread. The main controversy is in very low uncertainties generated by rigorous evaluation methods and much larger uncertainties based on simple estimates from experimental data. Since the evaluators tend to trust the former, while the users tend to trust the latter, this controversy has considerable practical implications. Dedicated effort is needed to arrive at covariance evaluation methods that would resolve this issue and produce results accepted internationally both by evaluators and users.

Subject

  • Keyword: Fast Neutrons
  • Keyword: Cross Sections
  • STI Subject Categories: 72 Physics Of Elementary Particles And Fields
  • Keyword: Quality Assurance
  • Keyword: Neutron Reactions
  • Keyword: Resonance
  • STI Subject Categories: 73 Nuclear Physics And Radiation Physics
  • Keyword: Evaluation
  • Keyword: Data Covariances

Source

  • Related Information: International Conference on Nuclear Data for Science and Technology; Jeju Island, Korea; 20100426 through 20100430

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: BNL--93618-2010
  • Grant Number: DE-AC02-98CH10886
  • DOI: 10.2172/1013490
  • Office of Scientific & Technical Information Report Number: 1013490
  • Archival Resource Key: ark:/67531/metadc844977
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