Neutron flux refers to the number of neutrons passing through a specific area in a given time, typically measured in neutrons per square centimeter per second. It is an important concept in nuclear physics and engineering, particularly in the context of nuclear reactors and radiation shielding. Understanding neutron flux helps in assessing the behavior of materials under neutron bombardment and in designing safe nuclear systems. In nuclear reactors, neutron flux plays a crucial role in sustaining the nuclear fission process, where the splitting of atomic nuclei releases energy. Monitoring neutron flux is essential for maintaining optimal reactor conditions and ensuring safety. High neutron flux can lead to increased radiation exposure, making it vital to implement effective radiation protection measures.