Modern X-ray Spectroscopy V. Resonant X-ray Scattering

CeO2 X-RAY RESONANT SPECTROSCOPY

Various samples of CeO prepared under different experimental conditions have been studied by X-ray pho$oabsorption comparatively to Ce metal. For substoichiometric samples, peaks characteristic of the ce3+ ion are predominant. For"purel' dioxyde the spectra reveal no localized 4f states are present in the ground state while extended states with 4f character are observed confirming partial coval...

Electronic structure of Ni complexes by X-ray resonance Raman spectroscopy (resonant inelastic X-ray scattering).

The potential of 1s2p resonant inelastic (Raman) X-ray scattering (RIXS) is demonstrated for a series of Ni coordination complexes. In this technique, incident and scattered photon energies lie in the hard X-ray range (>5 keV). The 1s2p RIXS contour plots provide information that is complementary to K-edge and L-edge spectroscopy. RIXS spectroscopy promises to be a valuable probe of electronic ...

Resonant elastic soft x-ray scattering.

Resonant (elastic) soft x-ray scattering (RSXS) offers a unique element, site and valence specific probe to study spatial modulations of charge, spin and orbital degrees of freedom in solids on the nanoscopic length scale. It is not only used to investigate single-crystalline materials. This method also enables one to examine electronic ordering phenomena in thin films and to zoom into electron...

Magnetic Resonant Inelastic X-ray Scattering

Attosecond Hard X-Ray Scattering Spectroscopy

Synopsis We formulate an analytic, semi-relativistic theory of laser-assisted attosecond Compton scattering by a weakly bound electron. We (i) present the evidence of the feasibility of measuring the ground-state electron momentum density in the attosecond regime and (ii) investigate the attosecond Compton streak camera and spectral phase interferometry proposing two new methods of measuring th...