Page 151 - Neutrons for Sciences and Society

Phonons and magnons are atomic and magnetic waves that travel through crystals and drive many of their physical properties. TAS spectrometers are today the most accurate way to measure these phenomena. Typical related scientific problems are in the field of quantum magnetism and the physics of highly correlated electron systems.
Portfolio of some typical ILL instruments in 2018
IN5, a neutron time-of-flight spectrometer (TOF)
Atomic, molecular and spin movements
inside matter are responsible for energy
gain or loss when the neutron passes
through the sample. An efficient way
of measuring this effect is to measure
the time that the neutrons take to cross
the distance between the sample and
the detector. The resulting motions
- diffusive, localised, propagative,
rotational, oscillating, etc. - can be studied spectrometer (TOF) (2012) in a variety of materials ranging from
biological compounds to technological and/or magnetic materials.
ThALES, a three-axis neutron spectrometer (TAS)
Portfolio 6: IN5, a neutron time-of-flight
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Portfolio 7: ThALES, a three-axis neutron spectrometer (TAS) (2016)