Vesuvio

This instrument is operational .

Actual instrument setup. The VESUVIO detectors (in the backscattering)

Actual instrument setup. The VESUVIO detectors (in the backscattering) are behind the foil cooling and cycling equipment and are therefore not visible.
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Vesuvio is a unique neutron spectrometer, which uses the high intensity of neutrons in the eV energy range and the pulsed nature of the ISIS source to measure atomic momentum distributions in a variety of condensed matter systems.

Energy transfers in the 1-100 eV region and wavevector transfers between 30 and 200 Å-1 are achieved using a filter difference technique. The energy of the scattered neutron is fixed by a nuclear resonance absorption foil and the incident energy and hence energy and momentum transfers are determined using standard time of flight techniques.

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