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Figure 2
Different operation modes for backscattering spectrometers using a movable monochromator crystal. Blue, violet, green and orange lines represent the operation mode with a sinusoidal velocity profile, a stationary heated monochromator crystal, and IFWS and EFWS, respectively. (a) The displacement profiles dmono translating the reference frame as a function of time. These translate to (b) the effective lattice spacing dlatt in the laboratory rest frame and thus to (c) the energy transfer ℏω encountered by the Bragg reflected neutrons. Identical monochromator and analyzer crystals, with the same crystal cut, are assumed. The detected scattering signal for the scenarios is shown in panel (c) in a rotated plot to have the energy transfer aligned with the plot in panel (b).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 57| Part 4| August 2024| Pages 912-924
https://doi.org/10.1107/S1600576724003820
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