STUDIES OF PHOTOIONIZATION DYNAMICS OF CH, NH, AND OH RADICALS AT NEAR-THRESHOLD PHOTOELECTRON KINETIC ENERGIES

We discuss results of theoretical studies of rotationally resolved pho toelectron spectra of the CH, NH, and OH radicals, including predictio ns of zero-kinetic-energy (ZEKE) spectra for molecular ions produced v ia resonance enhanced multiphoton ionization. The influence of dynamic al features such as Cooper minima, orbital evolution, and l mixing are examined for photoionization of the 3p sigma Rydberg orbital in these radicals. We also make specific predictions for the photoelectron spe ctra for each molecule within the context of current experimental capa bilities.