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Summary: Studies of electron transfer in NaI with pumpprobe femtosecond
photoelectron spectroscopy
Yasuki Arasaki and Kazuo Takatsukaa)
Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Komaba,
153-8902, Tokyo, Japan
Kwanghsi Wang and Vincent McKoyb)
Laboratory for Molecular Sciences, California Institute of Technology, Pasadena, California 91125
Received 5 June 2003; accepted 24 July 2003
We discuss an extension of our formulation of energy- and angle-resolved photoelectron spectra for
femtosecond pumpprobe ionization of wave packets to nonadiabatically coupled states and present
results of its applications to wave packet motion on the ionic (Na I ) and covalent NaI states of
sodium iodide. The results of these studies suggest that the energy and angular distributions of these
photoelectron spectra provide a useful mapping of the bifurcation of the wave packets through the
crossing region and a valuable window on the intramolecular electron transfer occurring between
the covalent and ionic states (NaINa I ). © 2003 American Institute of Physics.
DOI: 10.1063/1.1609397
I. INTRODUCTION
Numerous studies have shown pump-probe femtosecond
photoelectron spectroscopy to be a useful probe of wave
packet dynamics in molecular systems.112
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