Estimation of error in determining of 1/E spectrum deviation factor of epithermal Neutron flux in irradiation chanels of reactor

Abstract

Errors of determination of α-factor (1/E spectrum deviation factor of epithermal neutron flux) using monitors 197Au-94Zr and 197Au-64Zn in irradiation chanels of reactor have been studied in detail. Based on the customary error propagation theory, the error propagation functions on α-error were also presented. The method was applied to estimate α-error in irradiation chanels of Dalat reactor. The result of the estimation showed that the use of simple method for α-determination carried out in paper [1] is well agreement with other methods and having high confidence.