Hi guys! Im i have to write a paper on neutron an x-ray inelastic scattering. So far I have red a bit of information on this subject. As far as i can tell the main use x-ray an neutron inelastic scattering is determining the phonon energy,wave vector,intensity and so on. The thing is that phonon energy usually is in range of meV. So logically the difference between energy of incident and scattered particle would be more easily determined in case of particle with similar energy like thermal neutrons. But x-ray photons has energy 100eV to 100keV. Here is where im getting confused. In literature there is a lot of examples on x-ray scattering and mathematical descriptions. Why x-ray photons are used at all,if they have such huge energy therefore the diference between incdient and scattered photon is harder to determine? Is this true that neutrons where used first because of their energy and x-ray use started only when apparatus became more sensitive ?