252CF

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  • We have 0.87 MeV gammas from 252CF

Pb mass attenuation constant.jpg

Taking the worst scenario:

[math]\mu = 0.07\ cm^2/g \times 11.35\ g/cm^3 = 0.80\ cm^{-1}[/math]


[math]I = I_0\ \exp{(-\mu x)}[/math]