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Radiation Physics

Course Duration: 4h 30m
Last Updated:March 14, 2026
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About Course

This course provides a comprehensive analysis of the physical principles governing medical radiography, tailored specifically for the RRBN professional examination requirements. It covers the fundamental concepts of atomic structure, electromagnetic radiation, and the quantum mechanics of energy transfer.

Students will examine the detailed circuitry of X-ray production, including rectification and solid-state devices, alongside a thorough study of radioactivity, decay mechanisms, and the interactions of ionizing radiation with matter. The curriculum is designed to bridge the gap between theoretical physics and practical radiographic application.

What I will learn?

  • Master the Inverse Square Law and its application in exposure calculations.
  • Understand the complete X-ray circuit from the mains to the tube, including rectification.
  • Differentiate between Wave and Quantum theories of energy transfer.
  • Explain the mechanics of X-ray production and the role of the anode.
  • Solve radioactive decay, half-life, and binding energy problems.
  • Analyze the interactions of X-rays and Gamma rays with matter.

Requirements

  • Basic understanding of secondary school physics.
  • Scientific calculator required for calculation modules.

Course Curriculum

Energy & The Atom
This section connects the abstract concepts of Bohr’s atomic model to the practical reality of diagnostic imaging. You will learn how electron shells, binding energy, and nuclear stability dictate how X-rays are created and how they interact with matter. Mastering this foundation is crucial for understanding the rest of the syllabus.

  • Energy Transfer: Wave vs. Quantum Methods
  • Bohr’s Atom & Applications in Radiography
  • The Atomic Family: Isotopes, Isobars, Isomers, & Isotones
  • Nuclear Binding Energy & K-Capture
  • Energy & The Atom Quiz

X-Ray Production & Circuitry
We trace the journey of electricity from the wall socket to the X-ray tube. You will understand how solid-state rectifiers convert AC to DC, preventing tube damage, and the exact sequence of events at the anode that produces the X-ray beam. Expect high-yield exam questions from this section.

Radioactivity
Not all radiation comes from a tube. This section covers nuclear physics, focusing on unstable isotopes and their decay paths. We break down the math behind Half-Life calculations—a favorite of examiners—and review the instrumentation used to detect and measure radioactive activity in nuclear medicine.

Interactions & Laws
Once the beam leaves the tube, physics dictates its behavior. We cover the fundamental laws of interaction (Photoelectric vs. Compton), the mathematics of the Inverse Square Law, and the principles of filtration. This topic bridges the gap between pure physics and image quality.

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