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SLICS – Short Lived Isotope
Counting Services
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Table 6-1. Uranium decay series of Uranium 238
Isotope Emitted
particle Half-life
Isotope
238U α 4.47
billion yrs
↓
234Th β- 24.1
days
↓
234Pa β- 1.17
minutes
↓
234U α 248,000
yrs
↓
230Th α 75,200
yrs
↓
226Ra α 1600
yrs
↓
222Rn α 3.8235
days
↓
218Po α 3.10
minutes
↓
214Pb β- 27
minutes
↓
214Bi β- 19.9
minutes
↓
214Po α 0.000164
seconds
↓
210Pb β- 22.3
yrs
↓
210Bi β- 5.01
days
↓
210Po α 138.38
days
↓
206Pb Stable
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