Determination of dissociative limit of NO2 and characteristics of a molecular beam by fluorescence excitation spectra

Fluorescence excitation spectra are used to determine the onset of predissociation of rotationally cooled NO2 with an accuracy of 0.2 meV. The divergence and velocity distribution of the molecular beam are measured using only time-resolved and time-integrated fluorescence spectra. This eliminates the need for a seperate velocity selector and mass spectrometer. (orig.)