Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy

Table 4

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

	(Bq/kg)		Target value
	p-Type detector 1	n-Type detector 2	(Bq/kg)	p-Type detector 1	n-Type detector 2
Sediment sample IAEA-Tel-2014
^210Pb	—	23 ± 2	19.6 ± 4.5	—	0.67
^238U	23 ± 3	19 ± 2	16 ± 3.8	1.35	0.59
^226Ra	18 ± 1	17.4 ± 1.2	19 ± 4.8	0.29	0.32
^137Cs	12.4 ± 0.7	12.4 ± 0.7	12.0 ± 0.4	0.50	0.50
^228Ac	10.9 ± 0.7	11.6 ± 0.8	12.1 ± 1.5	0.72	0.29
^40K	280 ± 20	280 ± 20	270 ± 27	0.30	0.30
^212Pb	9.3 ± 0.6	11 ± 1	12.2 ± 1.5	1.79	0.67
^212Bi	13 ± 1	13 ± 1	12.2 ± 1.2	0.53	0.62
Seaweed sample IAEA-Tel-2014
^137Cs	21 ± 1	20 ± 1	22.96 ± 0.45	1.79	1.93
^134Cs	8.0 ± 0.7	8.0 ± 0.7	8.27 ± 0.2	0.37	0.40
^228Ac	2.8 ± 0.4	2.8 ± 0.4	2.5 ± 0.7	0.37	0.41
^40K	1580 ± 70	1580 ± 70	1780 ± 150	1.21	1.17
^212Pb	2.0 ± 0.1	2.0 ± 0.1	2.6 ± 0.6	0.99	0.94
^226Ra	5.7 ± 0.5	—	5.1 ± 3.7	0.16	—
Hay sample IAEA-TEL-2012
^137Cs	750 ± 40	740 ± 40	785 ± 24	0.64	0.99
^134Cs	280 ± 20	300 ± 20	306 ± 20	0.95	0.35
Soil sample IAEA-Tel-2013
^210Pb	480 ± 30	690 ± 40	595 ± 19	3.24N	2.15
^241Am	—	1.6 ± 0.2	1.8 ± 0.1	—	0.81
^238U	—	23 ± 3	23.6 ± 0.7	—	0.19
^40K	190 ± 10	190 ± 10	207.7 ± 8.3	1.36	1.36
^137Cs	107 ± 6	110 ± 6	118.6 ± 2.9	1.74	1.29
^208Tl	10.5 ± 0.8	10.3 ± 0.6	11.5 ± 0.6	1	1.41
^212Pb	30 ± 3	27.5 ± 2	31.0 ± 1.2	0.31	1.51
^228Ac	30 ± 2	30 ± 2	32.4 ± 1.6	0.94	0.94

Robust mean.