Introduction to Radiation Chemistry.- Theory of Scavenging and Recombination Kinetics.- Spin Dynamics.- Simulation Techniques and Development.- Photodissociation of Hydrogen Peroxide Solution.- Reactive Products: New IRT algorithm.- Competition between Ion Recombination and Scavenging.- Quantum Entanglement: Radiolysis of Hydrocarbons.- Extending the IRT Algorithm for Micelles.