Confirmation of Random-Matrix Fluctuations in Molecular Spectra

Abstract

Spectral fluctuation properties in the optical-fluorescence excitation spectrum of N${\mathrm{O}}_{2}$ are investigated. For this purpose new high-resolution measurements have been performed. We analyze the distribution of intensities and of level spacings and the spectral rigidity. Together with the consideration of effects of missing and spurious lines, the presence of random-matrix fluctuations is demonstrated unambiguously.