TY - GEN

T1 - Sensitivity of posterior parameter correlations and response parameter correlations to prior response uncertainty

AU - Wagschal, J. J.

PY - 2012

Y1 - 2012

N2 - The two parameters one response model of the generalized linear least squares parameter adjustment methodology was used in order to analyze the procedure of improving cross sections agreement with integral experimental results. Two extreme adjustment cases were considered. One case is using extremely accurate measured integral responses, such as keir of Godiva or Jezebel for instance. The other one is modifying only one parameter, for instance the modification of v- in ENDF/B-VII, in order to improve agreement of calculated responses with corresponding integral measurements results. In both cases new posterior parameters correlations are generated. The conclusion is that it is not advised to use integral measurements information in the evaluation process of a general purpose nuclear data file.

AB - The two parameters one response model of the generalized linear least squares parameter adjustment methodology was used in order to analyze the procedure of improving cross sections agreement with integral experimental results. Two extreme adjustment cases were considered. One case is using extremely accurate measured integral responses, such as keir of Godiva or Jezebel for instance. The other one is modifying only one parameter, for instance the modification of v- in ENDF/B-VII, in order to improve agreement of calculated responses with corresponding integral measurements results. In both cases new posterior parameters correlations are generated. The conclusion is that it is not advised to use integral measurements information in the evaluation process of a general purpose nuclear data file.

KW - Adjustment

KW - Correlations

KW - Cross section evaluation

KW - Integral experiments

UR - http://www.scopus.com/inward/record.url?scp=84870314935&partnerID=8YFLogxK

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AN - SCOPUS:84870314935

SN - 9781622763894

T3 - International Conference on the Physics of Reactors 2012, PHYSOR 2012: Advances in Reactor Physics

SP - 4127

EP - 4135

BT - International Conference on the Physics of Reactors 2012, PHYSOR 2012

T2 - International Conference on the Physics of Reactors 2012: Advances in Reactor Physics, PHYSOR 2012

Y2 - 15 April 2012 through 20 April 2012

ER -