Advertisement

Interactions of Photons with Matter

  • Ervin B. PodgoršakEmail author
Chapter
Part of the Biological and Medical Physics, Biomedical Engineering book series (BIOMEDICAL)

Abstract

In this chapter we discuss the various types of photon interaction with absorbing media. Photons are indirectly ionizing radiation and they deposit energy in the absorbing medium through a two-step process: (1) in the first step energy is transferred to an energetic light charged particle and (2) in the second step energy is deposited in the absorbing medium by the charged particle. The energy transferred to charged particles from the interacting photon generally exceeds the energy subsequently deposited in the absorbing medium by the charged particles, because some of the transferred energy may be radiated from the charged particles in the form of photons. Some of the photon interactions are only of theoretical interest and help in the understanding of the general photon interaction phenomena, others are of great importance in medical physics, since they play a fundamental role in imaging, radiotherapy as well as radiation dosimetry.

Keywords

Pair Production Incident Photon Energy Photonuclear Reaction Incoherent Scattering Recoil Electron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Department of Medical PhysicsCentre universitaire de santé McGill, McGill University Health CentreMontréalCanada

Personalised recommendations