Science and Technology of Nuclear Installations

Research Article

Presentation and Discussion of the UAM/Exercise I-1b: “Pin-Cell Burn-Up Benchmark” with the Hybrid Method

Table 5

Correlation matrix, , calculated at shutdown (61.28 GWd/TU) using SCALE6.1 cross-section data uncertainty. Column “ (%)” is the relative error in % for each isotope.


	(%)	U²³³	U²³⁴	U²³⁵	U²³⁶	U²³⁸	Np²³⁷	Pu²³⁸	Pu²³⁹	Pu²⁴⁰	Pu²⁴¹	Pu²⁴²	Am²⁴¹	Am²⁴²	Am²⁴³	Cm²⁴²	Cm²⁴³	Cm²⁴⁴

U²³³	2.2	1.0	0.6
U²³⁴	3.2	0.6	1.0												−0.1
U²³⁵	0.6			1.0	0.3							−0.1					−0.1
U²³⁶	0.4			0.3	1.0		0.2
U²³⁸	0.1					1.0		−0.2	−0.3	−0.2	−0.2	−0.3	−0.2		−0.2	−0.2		−0.2
Np²³⁷	0.8				0.2		1.0
Pu²³⁸	0.9					−0.2		1.0			0.1	0.4			0.2	0.4	0.1	0.3
Pu²³⁹	1.4					−0.3			1.0	−0.4	−0.2
Pu²⁴⁰	2.0					−0.2			−0.4	1.0	0.3		0.1
Pu²⁴¹	1.4					−0.2		0.1	−0.2	0.3	1.0	0.3	0.5		0.1	0.2
Pu²⁴²	1.4			−0.1		−0.3		0.4			0.3	1.0	0.4	0.2		0.5	0.1	0.1
Am²⁴¹	1.9					−0.2				0.1	0.5	0.4	1.0	−0.2		−0.2		0.1
Am²⁴²	5.8											0.2	−0.2	1.0		0.6	0.1
Am²⁴³	2.0		−0.1			−0.2		0.2			0.1				1.0	0.3	0.1	0.2
Cm²⁴²	1.7					−0.2		0.4			0.2	0.5	−0.2	0.6	0.3	1.0
Cm²⁴³	6.0			−0.1				0.1				0.1		0.1	0.1		1.0	0.1
Cm²⁴⁴	2.1					−0.2		0.3				0.1	0.1		0.2		0.1	1.0