|Science with Neutrons|
A neutron-velocity selector is a device that allows neutrons of defined velocity to pass while absorbing all other neutrons, to produce a monochromatic neutron beam. It has the appearance of a many-bladed turbine. The blades are coated with a strongly neutron-absorbing material, such as Boron-10.
Neutron-velocity selectors are commonly used in neutron research facility to produce a monochromatic beam of neutrons. Due to physical limitations of materials and motors, limiting the maximum speed of rotation of the blades, these devices are only useful for relatively slow neutrons.
- C. D. Clark, E. W. J. Mitchell, D. W. Palmer and I. H. Wilson (1966). "The design of a velocity selector for long wavelength neutrons" (PDF). J. Sci. Instrum., 1966, VOL. 43. pp. 1–5. Retrieved 31 December 2009.