neutron-scattering

Neutron optics is a branch of physics that studies the wave-like behavior of neutrons. Neutrons are electrically neutral subatomic particles found in atomic nuclei. When a beam of neutrons interacts with matter, they can be reflected, scattered, or diffracted. This phenomenon is analogous to how spectroscopy examines matter's interaction with electromagnetic radiation.

Slow neutrons, with wavelengths comparable to atomic spacing, exhibit wavelike behavior. When scattered by atoms in a solid, they can create diffraction patterns, revealing details about crystal structure and magnetic properties. This has led to Nobel Prize-winning work by Clifford G. Shull and Bertram N. Brockhouse in neutron diffraction and spectroscopy.1

Neutrons interact with atomic nuclei through scattering, absorption, or capture. Fast neutrons, with energies above 1 keV, are often detected by observing the energetic recoil nuclei produced when they elastically scatter off target nuclei, particularly hydrogen. These interactions are crucial in fields like physics, chemistry, biology, and materials science.231