Cross-Section and Attenuation
Attenuations described in terms of L2/(something)
Area _ cross section
large cross section _ high probability of interaction
Thus several kinds of attenuation coefficients:
Type Dimensions Units
Linear(µ) L-1 m -1
Mass (µ/r) L2M-1 m2kg-1
Electronic (eµ) L2q-1 m2e-1
Atomic (aµ) L2(atom)-1 m2(atom)-1
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