Data-Driven and Precursor-Group Uncertainty Propagation of Lattice Kinetic Parameters in UAM Benchmark

Table 1

Measured delayed neutron group parameters for the isotopes whose delayed neutrons are assigned to both thermal and fast sets.

Isotope	No.	()	(F)	()	(T)	Source
U-233	1	0.086 0.004	0.0126 0.0006	0.086 0.003	0.0126 0.0001	F: [7]
	2	0.274 0.007	0.0334 0.0021	0.299 0.004	0.0337 0.0006	T: [6]
	3	0.227 0.052	0.1310 0.0070	0.252 0.040	0.1386 0.0058
	4	0.317 0.016	0.3020 0.0360	0.278 0.020	0.3254 0.0306
	5	0.073 0.021	1.2700 0.3900	0.051 0.024	1.1271 0.4435
	6	0.023 0.010	3.1300 1.0000	0.034 0.014	2.5023 0.4246
U-235	1	0.038 0.004	0.0127 0.0003	0.033 0.003	0.0124 0.0003	F: [7]
	2	0.213 0.007	0.0317 0.0012	0.219 0.009	0.0305 0.0010	T: [6]
	3	0.188 0.024	0.1150 0.0040	0.196 0.022	0.1114 0.0041
	4	0.407 0.010	0.3110 0.0120	0.395 0.011	0.3014 0.0118
	5	0.128 0.012	1.4000 0.1200	0.115 0.009	1.1363 0.1546
	6	0.026 0.004	3.8700 0.5500	0.042 0.008	3.0137 0.3276
Np-237	1	0.032 0.003	0.0123 0.0009	0.040 0.002	0.0129 0.0006	F: [20]
	2	0.238 0.006	0.0284 0.0005	0.233 0.017	0.0324 0.0010	T: [21]
	3	0.175 0.008	0.0971 0.0070	0.190 0.010	0.1048 0.0019
	4	0.360 0.017	0.2960 0.0140	0.322 0.027	0.3410 0.0130
	5	0.150 0.014	0.9140 0.0580	0.193 0.007	0.8500 0.0600
	6	0.045 0.006	3.2000 0.1300	0.021 0.004	3.2000
Pu-239	1	0.038 0.004	0.0129 0.0003	0.035 0.009	0.0128 0.0006	F: [7]
	2	0.280 0.006	0.0311 0.0007	0.298 0.035	0.0301 0.0022	T: [6]
	3	0.216 0.027	0.1340 0.0040	0.211 0.048	0.1238 0.0088
	4	0.328 0.015	0.3310 0.0180	0.326 0.033	0.3254 0.0367
	5	0.103 0.013	1.2600 0.1700	0.086 0.029	1.1216 0.3866
	6	0.035 0.007	3.2100 0.3800	0.044 0.016	2.6971 0.4722
Am-243	1	0.017 0.005	0.0124 0.0036	0.024 0.013	0.0131 0.0002	F: [22]
	2	0.314 0.013	0.0311 0.0031	0.291 0.011	0.0311 0.0009	[23]
	3	0.205 0.011	0.1510 0.0020	0.221 0.008	0.1070 0.0070	[24]
	4	0.335 0.011	0.3921 0.0067	0.384 0.016	0.3240 0.0210	T: [21]
	5	0.088 0.009	0.8955 0.0405	0.051 0.004	0.9140 0.0310
	6	0.041 0.008	2.4493 0.0433	0.029 0.007	2.4493

In this table: F refers to fast fission and T refers to thermal fission.
Due to lack of data for group 6, the measured data of the fast group is used in the thermal group.