Radiation Therapy Physics

Concepts Review Blog

Sara Lorraine Gill, MSRS, CMD

Medical Dosimetrist and Educator

17. Ionization & Excitation

17. Ionization & Excitation

Sara Lorraine Gill
Published on: 06/07/2026

Excitation vs. ionization: two ways radiation interacts with atoms. Learn how each process works and why ionization is the key to understanding how radiation deposits dose in tissue.

electronradiationelectromagnetic radiationionizationexcitationattenuationbremsstrahlung

Come say hello on social!