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Anionic Photofragmentation of CO: A Selective Probe of Core-Level Resonances
Physical review letters
  • Wayne C. Stolte, University of Nevada, Las Vegas
  • D. L. Hansen, Jet Propulsion Laboratory
  • Maria Novella Piancastelli, Lawrence Berkeley National Laboratory
  • I. Dominguez-Lopez, Centro National de Metrologia
  • A. Rizvi, Lawrence Berkeley National Laboratory
  • Oliver Hemmers, University of Nevada, Las Vegas
  • H. Wang, Lund University
  • Alfred S. Schlachter, Lawrence Berkeley National Laboratory
  • M. S. Lubell, City College of New York
  • Dennis W. Lindle, University of Nevada, Las Vegas
Document Type
Publication Date
Anion-yield spectroscopy using x rays is shown to be a selective probe of molecular core-level processes, providing unique experimental verification of shape resonances. For CO, partial anion and cation yields are presented for photon energies near the C K edge. The O- yield exhibits features above threshold related only to doubly excited states, in contrast to cation yields which also exhibit pronounced structure due to the well-known σ* shape resonance. Because the shape resonance is completely suppressed for O-, anion spectroscopy thus constitutes a highly selective probe, yielding information unobtainable with absorption or electron spectroscopy.
  • Carbon monoxide,
  • Nuclear excitation,
  • Photoionization,
  • X-ray spectroscopy
Copyright American Physical Society. Used with permission.
Citation Information
Wayne C. Stolte, D. L. Hansen, Maria Novella Piancastelli, I. Dominguez-Lopez, et al.. "Anionic Photofragmentation of CO: A Selective Probe of Core-Level Resonances" Physical review letters Vol. 86 Iss. 20 (2001) p. 4504 - 4507
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