41 compton scattering diagram
the Compton energy shift. This would not be the case for X-ray energies. Another useful kinematic relation is the electron scattering angle in terms of the photon scattering angle: cotϕ = (1+γ)tanθ/2 where ϕ is the electron scattering angle relative to the incident photon di-rection. Compton scattering is another way gamma rays can interact in the crystal. Exercise 1 Compton scattering is a purely kinematic scattering of an incident gamma photon of energy Eγ with an electron (mass m) in the crystal that is either free or loosely bound (Ee ≈ 0, pe ≈ 0). Use conservation of energy and momentum to show that when As already seen in Section 2, to second order in e, the amplitude for Compton scattering involves the three Feynman diagrams shown in Figure 1. Evaluation of Eq. Evaluation of Eq. (III.33) ... Compton scattering diagram