Shape-resonance-induced non-Franck--Condon effects in (2+1) resonance enhanced multiphoton ionization of the C /sup 3/Pi/sub g/ state of O/sub 2/
Journal Article
·
· J. Chem. Phys.; (United States)
OSTI ID:6969248
We show that strong non-Franck--Condon effects observed in (2+1) resonance enhanced multiphoton ionization of the C /sup 3/Pi/sub g/ state of O/sub 2/ are due to the ksigma/sub u/ shape resonance previously observed in single-photon studies of diatomic molecules. Calculated vibrational branching ratios for the v' = 2,3 levels of the C /sup 3/Pi/sub g/ state are in reasonable agreement with experiment. Certain discrepancies remain in comparing theoretical results with the measured spectra, and possible electron-correlation effects which underly this are discussed.
- Research Organization:
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
- OSTI ID:
- 6969248
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 89:6; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BRANCHING RATIO
CORRELATIONS
ELECTRON CORRELATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FRANCK-CONDON PRINCIPLE
IONIZATION
MULTI-PHOTON PROCESSES
NONMETALS
OXYGEN
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RYDBERG STATES
SPECTROSCOPY
VIBRATIONAL STATES
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BRANCHING RATIO
CORRELATIONS
ELECTRON CORRELATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FRANCK-CONDON PRINCIPLE
IONIZATION
MULTI-PHOTON PROCESSES
NONMETALS
OXYGEN
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RYDBERG STATES
SPECTROSCOPY
VIBRATIONAL STATES