What is a neutron?
Neutrons are abundant throughout nature. Along with protons and electrons, they form the basic
building blocks of the material world. Neutrons are tightly bound together with protons in the
nucleus at the centre of an atom. The most common methods of making neutron beams for materials
research are nuclear fission using uranium fuel in a reactor, or spallation, where a
high-power particle accelerator fires aparticle beam into a metal target to release neutrons.
출처:Neutron scattering Materials research for modern life, ISIS