Electronic relaxation induced by interaction between diatomics in low temperature matrices

摘要

Fluorescence (phosphorescence) excitation spectra as well as luminescence spectra and decay times were investigated for NO in N2and mixed N2/Kr matrices. All Rydberg states rapidly relax to the ground state in mixed matrices with the N2molar fraction exceedingxN2=0.35. This dependence on the N2concentration is attributed to the complete fluorescence quenching of all NO molecules with at least one N2nearest neighbor. The vibrational levels of theBthinsp;2Pgr; valence states strongly coupled to the Rydberg state are also depopulated. The general picture of relaxation channels is discussed.