Effects of resonances in molecular photoionization measured with triply differential photoelectron spectroscopy

Conference · Thu Dec 31 23:00:00 EST 1981

OSTI ID:6235737

Parr, Albert C. ^[1]; Holland, D. M.P. ^[2]; Ederer, D. L. ^[1]; Dehmer, Joseph L. ^[3]

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1. Synchrotron Ultraviolet Radiation Facility, National Bureau of Standards, Washington, DC (United States)
2. University of Maryland, College Park, MD (United States)
3. Argonne National Laboratory (ANL), Argonne, IL (United States)

A variable wavelength angle resolving photoelectron spectrometer has been used to study the effects of autoionization and shape resonances upon molecular photoionization. Such resonance phenomena produce non-Franck-Condon effects in the vibrational intensity distributions and significant variations in the asymmetry parameters. Results are presented for C₂N₂ and CO₂. Constant Photoelectron Energy (CPE) spectroscopy has been performed on C₂H₂ and spectra are shown at four kinetic energies. The information concerning energy absorption in molecules gained from these studies is discussed.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: USDOE; Office of Naval Research; NATO
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6235737
• Report Number(s): CONF-820883--3; ON: DE83008648
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
ELECTRON SPECTROSCOPY
FRANCK-CONDON PRINCIPLE
IONIZATION
IONS
MOLECULAR IONS
MOLECULES
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
POLYATOMIC MOLECULES
RADICALS
RESONANCE
SPECTROSCOPY