Effects of Resonances in Molecular Photoionization Measured with Triply Differential Photoelectron Spectroscopy

Journal Article · Fri Dec 31 23:00:00 EST 1982 · International Journal of Mass Spectrometry and Ion Physics

DOI:https://doi.org/10.1016/0020-7381(83)80108-9· OSTI ID:1169923

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

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1. National Bureau of Standards, Washington, DC (United States). Synchrotron Ultraviolet Radiation Facility
2. Univ. of Maryland, College Park, MD (United States)
3. Argonne National Lab., 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 in 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 Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; Office of Naval Research; NATO
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 1169923
• Journal Information: International Journal of Mass Spectrometry and Ion Physics, Journal Name: International Journal of Mass Spectrometry and Ion Physics Vol. 46; ISSN 0020-7381
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS