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Two-dimensional x-ray correlation spectroscopy of remote core states.
- Author(s): Healion, Daniel
- Zhang, Yu
- Biggs, Jason D
- Hua, Weijie
- Mukamel, Shaul
- et al.
Published Web Location
https://doi.org/10.1063/1.4833560Abstract
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 separation and the resonant wavelength are presented. Application is made to the Se K-edge of a selenium dipeptide system.
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