Autoionization dynamics in the valence-shell photoionization spectrum of CO

Journal Article · Thu Dec 31 23:00:00 EST 1987 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.455204· OSTI ID:7005409

Hardis, J. E. ^[1]; Ferrett, T. A. ^[1]; Southworth, S. H. ^[1]; Parr, Albert C. ^[1]; Roy, P. ^[2]; Dehmer, Joseph L. ^[3]; Dehmer, Patricia M. ^[3]; Chupka, W. A. ^[4]

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1. National Bureau of Standards, Gaithersburg, MD (United States)
2. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
3. Argonne National Laboratory (ANL), Argonne, IL (United States)
4. Yale Univ., New Haven, CT (United States). Sterling Chemistry Lab.

Autoionizing Rydberg series in the valence-shell spectrum of CO have been studied by determining the high resolution relative photoionization cross section of cooled CO in the energy region 14.0--20.0 eV and by determining the vibrational branching ratios and the photoelectron angular distributions for production of CO⁺ X ²Σ⁺, v⁺ = 0--2 in the energy region 16.75--18.75 eV. Of particular interest are three prominent spectral features between 17.0 and 17.5 eV that result from interactions involving Rydberg series converging to the excited A ²Π and B ²Σ ⁺ states of the ion. The results are discussed in the context of recent two-step multichannel quantum defect theory calculations by Leyh and Raseev (the following paper).

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Health and Environmental Research; National Science Foundation (NSF)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7005409
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 2 Vol. 89; ISSN JCPSA6; ISSN 0021-9606
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
AUTOIONIZATION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CROSS SECTIONS
DISTRIBUTION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
IONIZATION
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RYDBERG STATES
SPECTROSCOPY