Fundamentals of Nuclear Reactors

This lecture delves into the core concepts of nuclear reactors, discussing the importance of delay neutrons in reactor operation. The instructor explains how the presence of delay neutrons affects the cooling process and prevents reactor meltdowns. The lecture covers the characteristics of fission products, the role of different isotopes in reactor operation, and the significance of neutron absorption. The instructor also explores the four-factor formula used to analyze chain reactions and the criticality conditions for sustaining a chain reaction. The session concludes with a discussion on reactor design considerations, such as the impact of moderator materials and the need for enrichment to achieve criticality.