Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy

Table 3

The measured activity concentrations of radionuclides obtained with efficiency calculated by EFFTRAN, along with the target values, and evaluation of accuracy using parameter.

	(Bq/kg)		Target value
	n-Type detector 2	p-Type detectors 1 and 3	(Bq/kg)	n-Type detector 2	p-Type detectors 1 and 3
IAEA-TEL-2014-03 sediment sample
^238U	18 ± 1	21 ± 4	16.0 ± 3.8	0.51	0.91
^226Ra	20.8 ± 0.8	22 ± 1	19.0 ± 4.8	0.37	0.61
^137Cs	14.3 ± 0.5	14.3 ± 0.5	12.0 ± 0.4	3.59N	3.59N
^228Ac	12.5 ± 0.4	12.9 ± 0.7	12.1 ± 1.5	0.26	0.48
^40K	292 ± 9	292 ± 9	270 ± 27	0.77	0.77
Sediment sample 662-1
^137Cs	18 ± 3	16.9 ± 0.8	14.0 ± 0.8	1.29	2.56
^228Ac	38.7 ± 3.1	35 ± 2	37 ± 3	0.39	0.55
^40K	555 ± 61	552 ± 20	470 ± 40	1.16	1.83
IAEA-TEL-2012-03 hay sample
^137Cs	760 ± 20	820 ± 30	785 ± 24	0.80	0.91
^134Cs	270 ± 20	320 ± 30	306 ± 20	1.27	0.39
IAEA-TEL-2014-03 water
^137Cs	—	12.6 ± 0.4	12.06 ± 0.1	—	1.31
^134Cs	—	21.3 ± 0.7	21.4 ± 0.2	—	0.14
^210Pb	—	38 ± 5	49.87 ± 1.23	—	2.31

Robust mean.