Igor Zalyzniak suggested adding a "diffraction-projected" intensities pathway, following the approach described in equations (1) and (2) and the SM of this recent PRL: https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.134.116504
Rather than simply integrating out the energy axis, one integrates out energy along an energy-dependent Q-path determined by conservation of momentum. This gives a more physical representation of what one obtains from diffraction instruments with large detector arrays and enables the inference of spectroscopic features from diffraction experiments.
Igor Zalyzniak suggested adding a "diffraction-projected" intensities pathway, following the approach described in equations (1) and (2) and the SM of this recent PRL: https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.134.116504
Rather than simply integrating out the energy axis, one integrates out energy along an energy-dependent Q-path determined by conservation of momentum. This gives a more physical representation of what one obtains from diffraction instruments with large detector arrays and enables the inference of spectroscopic features from diffraction experiments.