21. Pair Production
Published on: 18/07/2026
How high-energy photons create matter through pair production.
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Radiation Therapy Physics
Concepts Review Blog
Sara Lorraine Gill, MSRS, CMD
Medical Dosimetrist and Educator
17. Ionization & Excitation
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.
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16. Radiation Introduction
Published on: 29/06/2026
Not all radiation is the same. Learn the key difference between particle and electromagnetic radiation — and why it shapes how we image, treat, and think about dose.
protonneutronelectronradiationelectromagnetic radiationparticle radiation
15. Atomic Structure
Published on: 22/06/2026
Atomic structure: the foundation of radiation physics. Learn how protons, neutrons, and electrons determine how radiation interacts with matter.
atomatomic structureprotonneutronelectronnucleusradiation
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