 Quantum differential cross-section from a scattering amplitude

ID: quantum-differential-cross-section-from-a-scattering-amplitude

ψ \sim e^{ik z} + f (θ) \frac{e ^{ik r}}{r},

then the ratio of scattered radial probability current through

r^{2} d Ω

to the incident probability flux is

\frac{d σ}{d Ω} = ∣ f (θ) ∣^{2} .

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