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Klein–Nishina cross section

dσ/dΩ = 0.02866 b/sr

dσdΩ=re22(E′E)2(E′E+EE′−sin⁡2θ)\frac{d\sigma}{d\Omega}=\frac{r_e^2}{2}\left(\frac{E'}{E}\right)^2\left(\frac{E'}{E}+\frac{E}{E'}-\sin^2\theta\right)

Unpolarised Compton differential cross section per electron versus scatter angle.

Laser