CONTROL BY DENSITY EFFECTS OF THE RYDBERG VALENCE CONFIGURATION MIXING IN MATRIX-ISOLATED NO

Density effects and N2 co-doping of Kr solids doped with NO allow cont inuous tuning of the NO Rydberg state energies in a range 0.35 to 0.68 eV blue of the gas phase. This property is exploited to control the v ibronic configuration mixing between the Rydberg C 2PI and the valence B 2PI states. The influence on the interference lineshapes resulting from the interaction of discrete valence bands with the broad multipho non Rydberg bands is discussed in terms of estimates of the Fano indic es.