Question: A photon Compton-scatters from an electron through an angle of 90 ?, as shown in Fig. 14.13. In doing so, it loses half its initial energy:
a. What is the photon's initial wavelength?
b. What are the initial and final energies of the photon?
Fig. - Compton scattering event
c. Suppose the photon scattered through 180 ? instead of 90 ?. What would be its final wavelength and energy (λ', E')?
d. When the photon scatters through 180 ?, what is the final energy of the electron?