Neutron Cross section Covariances in the Resonance region: 50,53Cr, 54,57Fe and 60Ni

Oblozinsky, P. ; Cho,Y.-S. ; Mattoon,C.M. ; Mughabghab,S.F.

National Nuclear Data Center

关键词: Elastic Scattering;    Approximations;    Kernels;    Nuclear Data Collections;    Cross Sections;   

DOI  :  10.2172/1013522
RP-ID  :  BNL--94458-2010
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  1013522

美国|英语

来源: UNT Digital Library

【 摘 要 】

We evaluated covariances in the neutron resonance region for capture and elastic scattering cross sections on minor structural materials, {sup 50,53}Cr, {sup 54,57}Fe and {sup 60}Ni. Use was made of the recently developed covariance formalism based on kernel approximation along with data in the Atlas of Neutron Resonances. Our results of most interest for advanced fuel cycle applications, elastic scattering cross section uncertainties at energies around 100 keV, are on the level of about 7-10%.