The energy resolution associated with a particular Bragg reflection is limited by the diffraction properties and by the quality of the material. It can be derived from the structure factor within the dynamic theory of diffraction for ideal crystals. Using the GaAs  reflection on a neutron backscattering spectrometer we could realize a resolution of ΔE = (43 ± 5) neV. This is an improvement by about a factor of 3 as compared to the value calculated for ideal Si  and by about a factor of 7 as compared to the best experimental energy resolution available of any crystal spectrometer.
|Number of pages||5|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|State||Published - 1 Nov 1993|