Uncertainty of Doppler reactivity Worth due to Uncertainties of JENDL-3.2 Resonance Parameters

摘要

Analytical formula of Resonance Self-shielding Factor (f-factor) is derived from the resonance integral (J-function) based on NR approximatio nand the analtyical expression for Doppler reactivity worth (rho) is also obtained by using the result. Uncertainties of the f-factor and Doppler reactivity worht are evalauted on the basis of sensitivity coefficients to the resonance parameters. The uncertainty of the Doppler reactivity worht at 487 deg K is about 4