Isotope	Emission	Energy (keV)	Half-life	Shielding	Detection
C-14	β-	156	5730 y	None	GM
H-3	β-	18.6	12.3 y	None	NA
S-35	β-	167	87.4 d	None	GM
P-33	β-	249	25.4 d	None	GM
P-32	β-	1710	14.3 d	Lucite	GM
Ca-45	β-	256.9	162.7 d	None	GM
I-125	γ	35	60.14 d	Lead	NaI
Cr-51	γ	320	27.7 d	Lead	NaI

 

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