Understanding Neutron Radiography Post Exam Reading VIII-Part 2a of 2A

Compton Scatter
Collision of a photon with an electron increases the kinetic energy of the
electron. Thus set in motion, the electron is known as a recoil electron. The
incident photon’s energy is not necessarily depleted, but it will diverge from its
path and have lower energy -- i.e., it has a longer wavelength after collision.
In diagnostic radiology, such scattered photons may lower contrast and thus
degrade quality of the radiographic image.
Important interaction for intermediate-energy photons (100 KeV to 10 MeV)
Note:
0.34 ~ 1.2 MeV (Exam Q)
Charlie Chong/ Fion Zhang
https://www.med-ed.virginia.edu/courses/rad/radbiol/01physics/phys-03-03.html