Neutron-velocity selector

A neutron-velocity selector is a device used in neutron scattering experiments to select neutrons of a specific velocity (or energy) from a broader spectrum of neutrons produced in various sources, such as nuclear reactors or neutron spallation sources. The ability to select neutrons by their velocity or energy allows researchers to perform more precise measurements and studies of material properties. The operation of a neutron-velocity selector typically involves the use of mechanical and/or geometrical elements to achieve the desired selection.