Introduction. Interaction of Radiation with Matter: Energy Transfer from Fast Charged Particles. Structure of Charged Particle Tracks in Condensed Media. Ionization and Excitation Phenomena. Radiation Chemistry of Gases. The Solvated Electron. Spur Theory of Radiation Chemical Yields: Diffusion and Stochastic Models. Electron Thermalization and Related Phenomena. Electron Escape: The Free-Ion Yield. Electron Mobility in Liquid Hydrocarbons. Radiation Chemical Applications in Science and Industry.