Table 1 Summary of normalized integral delayed neutron (DN) counts over a 1–200 s interval for three ²³⁵U enrichments studied in this work.

AWCC mode	²³⁵U enrichment (wt%)	Neutron dose at 0° target chamber exit flange (mrem)	Neutron dose uncertainty (mrem)	Normalized integral of DN counts (counts/mrem)	Uncertainty of normalized integral of DN counts (counts/mrem)
Fast	12	14.6	0.5	32	10
Fast	38	19.0	0.6	103	9
Fast	66	13.2	0.6	103	12
Fast	66	21.9	0.4	132	8
Thermal	12	5.0	0.2	601	40
Thermal	12	18.3	0.6	785	27
Thermal	12	28.7	0.9	695	22
Thermal	12	23.6	0.6	782	20
Thermal	38	13.6	0.4	953	30
Thermal	38	34.5	1.2	1039	38
Thermal	38	21.9	0.6	1059	30
Thermal	38	33.3	0.9	963	27
Thermal	38	36.9	0.6	854	16
Thermal	38	27.2	0.2	878	11
Thermal	66	20.6	0.6	1090	33
Thermal	66	11.2	0.3	1151	38
Thermal	66	9.1	0.3	911	35
Thermal	66	27.6	0.2	1085	11
Thermal	66	36.7	0.6	908	17
Thermal	66	27.6	0.2	1041	10
Thermal	66	23.0	0.4	1292	24
Thermal	66	17.1	0.2	1068	19
Thermal	66	30.4	0.8	1173	31

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