Cross-section (Rayleigh+ Compton) in polar coordinates, σ(θ)eiθ, where σ is the amplitude of the cross-section in units of for the scattering angle θ and re is the classical electron radius. The enhancement of Rayleigh scattering caused by coherence effects is clearly visible at low energies. While the cross section remains constant with energy at angles close to zero, the contribution of Rayleigh scattering is shown to quickly decrease with increasing energy. Compton scattering is also suppressed by relativistic effects.
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