Perturbation Theory-Based Whole-Core Eigenvalue Sensitivity and Uncertainty (SU) Analysis via a 2D/1D Transport Code

Table 5

Integral sensitivity coefficients of some representative reaction types.

Reaction type	DP	PT	Relative error (%)
^235U σγ	−6.91997E − 01	−6.91369E − 01	0.091
^235U	9.26186E − 01	9.26202E − 01	0.001
^238U σγ	−2.73789E − 01	−2.75323E − 01	0.560
^238U	7.36809E − 02	7.36677E − 02	0.018
^235U χ ()	4.37645E − 03	4.41066E − 03	0.782
^238U χ ()	3.38537E − 04	3.41451E − 04	0.860
^1H σs	1.84890E − 01	1.85010E − 01	0.065