Page 153 - Neutrons for Sciences and Society
P. 153
GRANIT, a gravitational neutron spectrometer
This instrument was the first to observe quantum states of ultra-cold neutrons in a gravitational field. It now uses these quantum states, and the resonant transitions between them, as probes for measuring physical phenomena with ultra-high energy resolution. The photo illustrates the fact that the quantum states of the neutron hover above the mirror of the instrument.
S18, a neutron interferometer
Theheart of S18 is a perfect silicon crystal, which constitutes an interferometer for thermal neutrons. The instrument is used to perform advanced experiments in neutron optics, making it possible to study
Portfolio 10: GRANIT , a gravitational neutron spectrometer (2009)
Portfolio of some typical ILL instruments in 2018
fundamental phenomena in quantum Portfolio 11: S18, a neutron interferometer physics. Another important application (2016)
is the precise measurement of neutron scattering lengths.
144
