A Thermal Neutron Reactor is a type of nuclear reactor that uses thermal neutrons to sustain a nuclear chain reaction. In this reactor, the neutrons produced from fission are slowed down by a moderator, such as water or graphite, making them more likely to interact with fissile materials like uranium-235 or plutonium-239. This process allows the reactor to efficiently produce energy. These reactors are commonly used for electricity generation and research purposes. They are designed to maintain a controlled environment where the fission process can be safely managed. The heat generated from the fission reaction is typically used to produce steam, which drives turbines to generate electricity.