IONIZATION CHANNELS OF SUPEREXCITED MOLECULES

Infinite perturbed Rydberg states for molecules can be correlated with quantum defect parameters. We present our theoretical results of Rydberg series (ionization channels) for the NO molecules. In the f_σ channel, there exists a resonance which leads to the fine structure near the X-ray absorption K edges. The resonance energy decreases as the internuclear distance increases. Such relation can be utilized to diagnose the relevant bond-length of the molecules chemisorbed on the surface.