Stimulated X-Ray Raman Scattering with Free-Electron Laser Sources
Stimulated electronic x-ray Raman scattering is the building block for several proposed x-ray pump probe techniques, that would allow the study of electron dynamics at unprecedented timescales. We present high spectral resolution data on stimulated electronic x-ray Raman scattering in a gas sample of neon using a self-amplified spontaneous emission x-ray free-electron laser. Despite the limited spectral coherence and broad bandwidth of these sources, high-resolution spectra can be obtained by statistical methods, opening the path to coherent stimulated x-ray Raman spectroscopy. An extension of these ideas to molecules and the results of a recent experiment in CO are discussed.
KeywordsStimulate Raman Scattering Spectral Coherence Auger Decay Electronic Wave Packet Linac Coherent Light Source
Portions of this research were carried out at the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory. LCLS is an Office of Science User Facility operated for the U.S. Department of Energy Office of Science by Stanford University. Part of this work has been financially supported by the Swedish Research Council and the Knut and Alice Wallenberg Foundation, Sweden. Part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory (Contract No. DE-AC52-07NA27344). Support for the work of M. P., D. R., and J. J. R. by the U.S. Department of Energy, Office of Science, Basic Energy Sciences AMOS Program is acknowledged.