Beer-Lambert I(x) = I₀ exp(−μx): photoelectric + Compton + pair-production

Layer 1 — Physicsin the medical-physics subtree

Photon attenuation in matter under narrow-beam / good-geometry conditions follows the Beer-Lambert exponential law I(x) = I₀ · exp(−μ x), with μ the linear attenuation coefficient (m⁻¹) — probability per unit path length for any…

Related concepts

Mass attenuation coefficient μ/ρ
Photon-matter interactions
Absorption laws (logic)
μ·HVL = ln 2; TVL/HVL = log(10)/log(2) ≈ 3.32
exp(−μ·n·HVL) = 2^{−n}: 1/2, 1/4, 1/8 at n=1,2,3; 1/1024 at n=10

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