Multidimensional x-ray spectroscopy of valence and core excitations in cysteine
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TLDR
In this paper, the coupling between localized core and delocalized valence excitation in two-and three-pulse stimulated x-ray Raman spectroscopy (SXRS) signals with frequency-dispersed probe was investigated.Abstract:
Several nonlinear spectroscopy experiments which employ broadband x-ray pulses to probe the coupling between localized core and delocalized valence excitation are simulated for the amino acid cysteine at the K-edges of oxygen and nitrogen and the K- and L-edges of sulfur. We focus on two-dimensional (2D) and 3D signals generated by two- and three-pulse stimulated x-ray Raman spectroscopy (SXRS) with frequency-dispersed probe. We show how the four-pulse x-ray signals kI=−k1+k2+k3 and k II =k1−k2+k3 can give new 3D insight into the SXRS signals. The coupling between valence- and core-excited states can be visualized in three-dimensional plots, revealing the origin of the polarizability that controls the simpler pump-probe SXRS signals.read more
Citations
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Three-dimensional attosecond resonant stimulated X-ray Raman spectroscopy of electronic excitations in core-ionized glycine.
TL;DR: It is investigated computationally the valence electronic excitations of the amino acid glycine prepared by a sudden nitrogen core ionization induced by an attosecond X-ray pump pulse to reveal the complex coupling between valence and core-excited manifolds of the cation.
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Accessing Excited State Molecular Vibrations by Femtosecond Stimulated Raman Spectroscopy
TL;DR: This work shows how detailed information about ground and excited state vibrations can be disentangled by exploiting the relative time delay between Raman and probe pulses to control the excited state population, combined with a diagrammatic formalism to dissect the pathways concurring with the signal generation.
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Multidimensional scattering of attosecond x-ray pulses detected by photon-coincidence
TL;DR: In this paper, a new photon-coincidence measurement based on the time and wavevector-resolved detection of photons generated by the scattering of multiple x-ray pulses with variable delays is proposed.
Journal ArticleDOI
Dissociation pathways in the cysteine dication after site-selective core ionization.
TL;DR: A photoelectron-ion-ion coincidence experiment has been carried out on the amino acid molecule cysteine after core-ionization of the O1s, N 1s, C 1s and S 2p orbitals, and a number of different dissociation channels show strong site-selective dependence.
Journal ArticleDOI
Two-dimensional x-ray correlation spectroscopy of remote core states.
TL;DR: In this article, 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.
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