Neutron radiation consists of free neutrons that are released during nuclear reactions, such as fission or fusion. Unlike charged particles, neutrons are neutral and can penetrate materials more easily, making them significant in various applications, including nuclear reactors and medical treatments. When neutrons interact with matter, they can cause nuclear reactions, leading to the production of secondary radiation. This property makes neutron radiation useful in fields like nuclear physics and radiation therapy, but it also poses safety risks, as it can damage living tissues and materials. Proper shielding and safety measures are essential when working with neutron radiation.