Single photon simultaneous K-shell ionization and K-shell excitation. I. Theoretical model applied to the interpretation of experimental results on H2O

S. Carniato*, P. Selles, L. Andric, J. Palaudoux, F. Penent, M. Žitnik, K. Bučar, M. Nakano, Y. Hikosaka, K. Ito, P. Lablanquie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

We present in detail a theoretical model that provides absolute cross sections for simultaneous core-ionization core-excitation (K-2V) and compare its predictions with experimental results obtained on the water molecule after photoionization by synchrotron radiation. Two resonances of different symmetries are assigned in the main K-2V peak and comparable contributions from monopolar (direct shake-up) and dipolar (conjugate shake-up) core-valence excitations are identified. The main peak is observed with a much greater width than the total experimental resolution. This broadening is the signature of nuclear dynamics.

Original languageEnglish
Article number014307
JournalJournal of Chemical Physics
Volume142
Issue number1
DOIs
StatePublished - 2015/01/07

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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