Threshold behaviour of neutral photodissociation with excitation of CO probed by dispersed fragment VUV fluorescence

Abstract
Dispersed VUV fluorescence emitted from photodissociation fragments in the wavelength range between 90 and 200 nm has been recorded following the neutral photodissociation of CO using monochromatized synchrotron radiation for exciting-photon energies close to the respective dissociation thresholds. Qualitatively different energy dependencies of the fluorescence intensities have been observed close to the thresholds. Atomic carbon fluorescence at wavelengths of 119, 128, 132.9, and 146 nm has been observed for the first time after neutral photodissociation with excitation of CO.