Neutron kinetics is the study of how neutrons behave and interact within a nuclear reactor. It focuses on the rates of neutron production, absorption, and scattering, which are crucial for maintaining a controlled nuclear chain reaction. Understanding these processes helps ensure the reactor operates safely and efficiently. In a nuclear reactor, neutrons are produced during fission reactions, where heavy nuclei like uranium-235 split into smaller nuclei. The behavior of these neutrons is influenced by factors such as moderators, which slow down fast neutrons, and control rods, which absorb excess neutrons to regulate the reaction rate.