This book discusses in detail the phenomena of Pre-equilibrium emission in statistical nuclear reactions. It serves as an experimental manual for beginners in the field of accelerator-based research, and as a source of complete information on the topic. This book compiles most of the experimental data on pre-equilibrium emission available at low and moderate energies, putting it into an accessible format for the first time. It is intended to help early-career nuclear physicists and doctoral students to understand the phenomenon of pre-equilibrium emission in nuclear reactions. It is ideal for postgraduate students studying accelerator-based experimental physics and dedicated researchers working in the field of nuclear reaction studies.