Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1

Table 5

Largest integrated sensitivity coefficients of the reaction cross sections for the unrodded case at HZP and HFP sorted in descending order provided by SCALE-6.1.

(a) HZP

Reaction		Int.sen.coef.
235U	𝜈	9.4533𝐸−01
235U	(𝑛,𝑓)	2.7342𝐸−01
238U	(𝑛,𝛾)	−1.9175𝐸−01
1H	(𝑛,𝑛)	1.5701𝐸−01
235U	(𝑛,𝛾)	−1.4756𝐸−01
238U	𝜈	5.4659𝐸−02
1H	(𝑛,𝛾)	−4.5765𝐸−02
238U	(𝑛,𝑓)	2.6307𝐸−02
238U	(𝑛,𝑛)	1.4825𝐸−02

(b) HFP

Reaction		Int.sen.coef.
235U	𝜈	9.4404𝐸−01
235U	(𝑛,𝑓)	2.7389𝐸−01
238U	(𝑛,𝛾)	−1.9659𝐸−01
1H	(𝑛,𝑛)	1.6365𝐸−01
235U	(𝑛,𝛾)	−1.4806𝐸−01
238U	𝜈	5.5948𝐸−02
1H	(𝑛,𝛾)	−4.4564𝐸−02
238U	(𝑛,𝑓)	2.7192𝐸−02
238U	(𝑛,𝑛)	1.5870𝐸−02