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Title: A-Priori and A-Posteriori Covariance Data in Nuclear Cross Section Adjustments: Issues and Challenges

In order to provide useful feedback to evaluators a set of criteria are established for assessing the robustness and reliability of the cross section adjustments that make use of integral experiment information. Criteria are also provided for accepting the “a posteriori” cross sections, both as new “nominal” values and as “trends”. Some indications of the use of the “a posteriori” covariance matrix are indicated, even though more investigation is needed to settle this complex subject.
Authors:
 [1] ;  [1] ;  [2]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
OSTI Identifier:
1177606
Report Number(s):
INL/JOU--14-32043
Journal ID: ISSN 0090-3752; TRN: US1500047
DOE Contract Number:
AC07-05ID14517
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Data Sheets; Journal Volume: 179
Publisher:
Elsevier
Research Org:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; Cross-Section Library; CROSS SECTIONS; MATRICES; RELIABILITY; DATA COVARIANCES; CORRELATIONS; Nuclear Reactions; Evaluation COVARIANCE DATA; CROSS SECTION ADJUSTMENTS