Defects in Solids, Volume 13: Radiation Effects Computer Experiments provides guidance to persons interested in learning how to develop and use computer experiment programs to simulate defect production and annealing in solids.The book first elaborates on computer experiment methods and outline of defect properties computations. Topics include metal models used in defect property example calculations; configuration energy computation procedure; migration energy computation procedure; dynamical method; and Monte Carlo method. The publication also examines vacancies and divacancies and self interstitials.The manuscript takes a look at impurity atoms, defect migration, and vacancy clusters. Discussions focus on heterogeneous nucleation of vacancy clusters and voids, vacancy and divacancy migration, substitutional metallic large impurity atom, and vacancy clusters in face-centered cubic metals. The publication also tackles binary collision approximation cascade program construction and collision cascades and displacement spikes.The text is a valuable source of information for readers wanting to develop and use computer experiment programs to copy defect production and annealing in solids.