RIXS and other resonant spectroscopies at a FEL source
Giacomo Ghiringhelli
University of Milan
Resonant Inelastic X-ray Scattering (RIXS) has been emerging as a novel and powerful technique for the study of medium and low energy excitations in strongly correlated electron systems. Its recent development is mainly due to a gain in the experimental energy resolution, but not only. What can RIXS gain from an FEL source? On the other hand, high resolution RIXS is not the only photon hungry spectroscopy that could benefit from a very brilliant pulsed source of soft x-rays. Measuring the polarization of emitted photons or photoelectrons is difficult but potentially extremely interesting. Finally, which of those techniques could be used in pump-probe approach? I will try to give some hints based on my personal experience.
