IONIC STATES OF SMALL MOLECULES INVESTIGATED BY VIBRATIONALLY RESOLVED
CORE-LEVEL PHOTOELECTRON SPECTROSCOPY
U. Hergenhahn, A. Rüdel, E. E. Rennie, K. Maier, B. Kempgens, H. M.
Köppe and A. M. Bradshaw
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195
Berlin, Germany.
Vibrationally resolved core-level photoelectron spectra have been
measured for two closed-shell molecules, nitrogen and ethane, and two
open-shell molecules, oxygen and nitric oxide, using highly
monochromatic synchrotron radiaition. The analysis of these spectra have
provided valuable and either previously unknown or unconfirmed
information on the core-excited state of the molecule. For example, the
exchange interaction present in NO has been resolved in the O1s-1
spectra for the first time.