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Near-infrared dispersed fluorescence measurements of 13 different atomic multiplets of neutral atomic fragments from photon induced neutral dissociation processes in NO are reported. For excitation of the molecules narrow band synchrotron photons of energy 17.2-25.8 eV were used. Neither Rydberg series nor other molecular states in NO known so far can account for the collected data. From ab initio calculations we try to obtain more information regarding the NO precursor states, and the mechanism behind the observed neutral dissociation.

The photoion excitation spectrum of NO has been measured in the 9.26-13.8 eV region using synchrotron light and the isotopic targets 14N160, 15N160 and 15N180. The resulting complex spectra have be ...

The photoion excitation spectra of 14NO and 15NO have been studied in the 105-112 nm excitation region usinghigh-order harmonic laser spectroscopy. Utilizing the small bandwidth offered by this tec ...

The photofragmentation of neopentane in the photon energy range 10–30 eV with synchrotron radiation is analysed and compared with previous data on mass and photoelectron spectra of this molecule. A broad maximum due to a shape resonance in the ion yield of the most abundant fragment ions is observed around 16 eV photon energy along with Rydberg series converging to the 2a 1 −1 ionization threshold. The analysis of the branching ratios of the main fragment ions hints at a preferential decay of the shape resonance through the ionization channel 3t 2 −1 .

Direct determination of the ionization potential of CO by resonantly enhanced multiphoton ionization mass spectroscopy