Practical measurement of the energy resolution for meV-resolved inelastic X-ray scattering

Several different ways of measuring the energy resolution for meV-resolved inelastic X-ray scattering (IXS) are compared: using from poly(methyl methacrylate), PMMA, borosilicate glass (Tempax), and powder diffraction aluminium. All these methods provide a reasonable first approximation to resolution, but, also, in all cases, contributions appear over some range transfers. Over ±15 meV transfer there is good agreement between measurements PMMA Tempax at low temperature, room-temperature aluminium, so we consider this be indication true our ∼1.3 spectrometer. The wider self-consistently determined momentum sample dependence measured response. Tempax, their on then quantitatively investigated. resulting data allow us determine multi-analyzer array efficiently single scan. importance procedure demonstrated by showing that results analysis spectrum changed properly deconvolved function. impact radiation damage also discussed.