Studies of Molecular Photoionization

It is becoming increasingly clear that, due to the availability of high-resolution electron spectrometers utilizing synchrotron light sources, increasing amounts of data containing detailed dynamical information on molecular photoionization are being produced. Such data have already shown that shape and autoionizing resonances play a very important role in molecular photoionization processes. For example, these resonant processes can induce significant deviations of the vibrational branching ratios from those based on Franck-Condon factors and also lead to photoelectron asymmetry parameters which depend strongly on the final vibrational state of the ion. The availability of such data is stimulating the development and application of theoretical methods for studying molecular photoionization processes at the appropriate quantitative level.