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

摘要

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 C sub 2 N sub 2 and CO sub 2 . Constant Photoelectron Energy (CPE) spectroscopy has been performed on C sub 2 H sub 2 and spectra are shown at four kinetic energies. The information concerning energy absorption in molecules gained from these studies is discussed. (ERA citation 08:024519)