On a mosaic graphite spectrometer without collimators

An X-ray spectrometer was constructed for the detection of very weak lines having a large energy shift from the primary (Rayleigh) line. The spectrometer has no collimators and uses a graphite mosaic crystal as an analyser. The dependence of the resolution and intensity on one another is examined and both are calculated as a function of the scatterer-analyzer distance. The spectrometer was tested in X-ray inelastic scattering experiments