Table 4: Comparison of the 212Pb half-life determined in different ways.

Gamma-spectrometry

Beta-count

 

Alpha-spectrometry

Cloud Chamber

Method

Track count

GGP

10.86

10.85

10.64

10.77

10.74

10.77

10.75

11.71

6.5-11.1

10.64

T1/2, h

 

 

 

 

6.050
MeV

8.785
MeV

Sum

 

 

Literature value