Efficiency Analysis and Comparison of Different Radon Progeny Measurement Methods

Table 1

Efficiency analysis of different radon progeny measuring methods.

	Methods	SDPAEC (%)	Total time; (min)	Efficiency index; EI = 1/(SD * Total time)	Sampling time; (min)	Counting time; (min)
1	Thomas 1972; 𝛼1,2	18.0	35	0.16	5	(7–10)(11–25)(26–35)
2	Nazaroff 1984; 𝛼1,2	6.3	60	0.26	5	(6–9)(12–29)(40–60)
		6.9	60	0.24		(7–10)(13–30)(42–60)
3	Kerr 1975; 𝛼1𝛼2	7.1	40	0.35	10	(12–22)(25–40)
4	𝛼1,2(8)	16.2	35	0.18	10	(11–14)…(32–35)
	𝛼1,2(10)	10.4	41	0.23		(11–14)…(38–41)
5	𝛼1𝛼2(8)	8.1	35	0.35	10	(11–14)…(32–35)
	𝛼1𝛼2(10)	6.1	41	0.40		(11–14)…(38–41)
6	𝛼1𝛼2𝛽(1)	9.9	14	0.72	10	(11–14)
7	𝛼1𝛼2𝛽(8)	3.4	35	0.84	10	(11–14)…(32–35)
	𝛼1𝛼2𝛽(10)	3.1	41	0.78		(11–14)…(38–41)