3D Radioactive Source: Range & Penetration
HKDSE simulation of α, β, γ through air and absorbers in 3D.
HKDSE Summary
α: short range in air, stopped by paper. β: aluminium. γ: thick lead.
Model
\( R \approx R_0(5/d)^2 T_{\mathrm{air}} T_{\mathrm{abs}} + R_{\mathrm{bg}} \)
\( T_{\mathrm{abs}} \approx e^{-\mu x} \) (β, γ)