title: Nuclear dynamics and spectator effects in resonant inelastic soft x-ray scattering of gas-phase water molecules.
abstract: The electronic structure of gas-phase H(2)O and D(2)O molecules has been investigated using resonant inelastic soft x-ray scattering (RIXS). We observe spectator shifts for all valence orbitals when exciting into the lowest three absorption resonances. Strong changes of the relative valence orbital emission intensities are found when exciting into the different absorption resonances, which can be related to the angular anisotropy of the RIXS process. Furthermore, excitation into the 4a(1) resonance leads to nuclear dynamics on the time scale of the RIXS process; we find evidence for vibrational coupling and molecular dissociation in both, the spectator and the participant emission.
authors.affiliation: Institute for Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-v.-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. lothar.weinhardt@kit.edu
authors.forename: Lothar
authors.initials: L
authors.lastname: Weinhardt
authors.forename: Andreas
authors.initials: A
authors.lastname: Benkert
authors.forename: Frank
authors.initials: F
authors.lastname: Meyer
authors.forename: Monika
authors.initials: M
authors.lastname: Blum
authors.forename: Regan G
authors.initials: RG
authors.lastname: Wilks
authors.forename: Wanli
authors.initials: W
authors.lastname: Yang
authors.forename: Marcus
authors.initials: M
authors.lastname: Bär
authors.forename: Friedrich
authors.initials: F
authors.lastname: Reinert
authors.forename: Clemens
authors.initials: C
authors.lastname: Heske