Compton scattering occurs with:

Compton scattering occurs with:

• A. Photoelectric absorption
• B. Pair production
• C. Compton scattering
• D. Coherent scattering

Answer: (C)

X-ray photons interacting with matter can undergo several different processes, and Compton scattering is the inelastic collision where the photon scatters from a loosely bound electron. In this interaction, the photon transfers part of its energy to the electron, causing the emitted photon to have lower energy (longer wavelength) and the electron to recoil. This energy change depends on the scatter angle and is a hallmark of Compton scattering. This differs from photoelectric absorption, where the photon is completely absorbed and ejects a bound electron; from pair production, which requires photon energy above 1.022 MeV and creates an electron-positron pair; and from coherent (Rayleigh) scattering, which is elastic and leaves the photon’s energy essentially unchanged.

X-ray photons interacting with matter can undergo several different processes, and Compton scattering is the inelastic collision where the photon scatters from a loosely bound electron. In this interaction, the photon transfers part of its energy to the electron, causing the emitted photon to have lower energy (longer wavelength) and the electron to recoil. This energy change depends on the scatter angle and is a hallmark of Compton scattering.

This differs from photoelectric absorption, where the photon is completely absorbed and ejects a bound electron; from pair production, which requires photon energy above 1.022 MeV and creates an electron-positron pair; and from coherent (Rayleigh) scattering, which is elastic and leaves the photon’s energy essentially unchanged.