Nonlocal Interactions in the Double Perovskite Sr₂FeMoO₆ from Core-Level X-ray Spectroscopy

the plain x-ray the diagnosis of the acute abdomen_

چکیده ندارد.

Surface and core hole effects in X-ray photoelectron spectroscopy

Double-core-hole spectroscopy for chemical analysis with an intense X-ray femtosecond laser.

Theory predicts that double-core-hole (DCH) spectroscopy can provide a new powerful means of differentiating between similar chemical systems with a sensitivity not hitherto possible. Although DCH ionization on a single site in molecules was recently measured with double- and single-photon absorption, double-core holes with single vacancies on two different sites, allowing unambiguous chemical ...

Probing interactions between core-electron transitions by ultrafast two-dimensional x-ray coherent correlation spectroscopy.

Two-dimensional x-ray correlation spectra (2DXCS) obtained by varying two delay periods in a time-resolved coherent all-x-ray four-wave-mixing measurement are simulated for the N 1s and O 1s transitions of aminophenol. The necessary valence and core-excited states are calculated using singly and doubly substituted Kohn-Sham determinants within the equivalent-core approximation. Sum-over-states ...

Two-dimensional x-ray correlation spectroscopy of remote core states

Nonlinear all-X-ray signals that involve large core-atom separation compared to the X-ray wavelengths may not be described by the dipole approximation since they contain additional phase factors. Expressions for the rotationally averaged 2D X-ray photon echo signals from randomly oriented systems that take this position-dependent phase into account for arbitrary ratio between the core separatio...