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Phys. Rev. A 78, 052509 (2008) [9 pages]

Double-quantum-coherence attosecond x-ray spectroscopy of spatially separated, spectrally overlapping core-electron transitions

Igor V. Schweigert and Shaul Mukamel
Department of Chemistry, University of California, Irvine, California 92697-2025, USA
Received 31 July 2008; published 19 November 2008

X-ray four-wave mixing signals generated in the k1+k2k3 phase-matching direction are simulated for N 1s transitions in paranitroaniline and two-ring hydrocarbons disubstituted with an amine and a nitroso groups. The two-dimensional x-ray correlation spectra (2DXCS) provide background-free probes of couplings between core-electron transitions even for multiple core shells of the same type. Features attributed to couplings between spatially separated core transitions connected by delocalized valence excitations provide information about molecular geometry and electronic structure unavailable from linear near-edge x-ray absorption (XANES).

©2008 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.78.052509
DOI: 10.1103/PhysRevA.78.052509
PACS: 33.20.Rm; 42.65.Dr
  • 33.20.Rm
    X-ray molecular spectra
  • 42.65.Dr
    Stimulated Raman scattering; CARS
  • YEAR: 2008
KEYWORDS: molecular configurations, molecular electronic states, multiwave mixing, organic compounds, XANES

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