Knowra Neutron scattering Neutron scattering Neutron scattering probes materials by measuring how neutrons change direction or energy after interacting with them. It reveals atomic and magnetic structure, motion, and dynamics.
Neutron : A neutral subatomic particle found in atomic nuclei, with a magnetic moment and a wavelength suited to probing matter. Its mass, magnetic moment, and lack of electric charge enable distinctive interactions with materials.
Small-angle neutron scattering : A method that measures neutrons scattered through small angles to study structures on nanometre scales. It probes large-scale inhomogeneities such as polymers, pores, and particles.
Research reactor : A nuclear reactor designed primarily to provide neutrons for research, isotope production, or materials testing. Reactor cores provide continuous neutron beams for many scattering instruments.
X-ray scattering : A family of methods that probes matter by measuring how X-rays scatter from electrons. X-rays emphasize electron density, whereas neutrons interact with nuclei and magnetic moments.
Clifford Shull : An American physicist who pioneered neutron diffraction and shared the 1994 Nobel Prize in Physics. His experiments demonstrated how neutron diffraction could determine crystal structures.
Neutron diffraction : A technique that uses elastically scattered neutrons to determine periodic atomic and magnetic structures. Elastic scattering produces diffraction patterns that reveal long-range order.
Neutron reflectometry : A technique that measures reflected neutrons to determine structure perpendicular to a surface or thin film. It resolves buried interfaces and depth profiles, including magnetic layers.
Spallation source : A facility that produces intense neutron pulses by striking a heavy-metal target with high-energy particles. Pulsed neutron production enables time-of-flight measurements and broad energy coverage.
Electron diffraction : A diffraction method that uses electron waves scattered by a material's electrostatic potential. Electrons interact strongly with matter, unlike neutrons' deeper penetration in many samples.
Bertram Brockhouse : A Canadian physicist who developed inelastic neutron scattering and shared the 1994 Nobel Prize in Physics. His spectrometer enabled measurements of energy changes in scattered neutrons.
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