Electron impact fragmentation of pyrrole molecules studied by fluorescence emission spectroscopy

Abstract

The fluorescence emission spectroscopy using electron impact excitation technique was employed to study fragmentation processes of the gas phase pyrrole molecules. The following excited fragmentation species were observed by detection of their fluorescence decay: the atomic hydrogen H(n), n = 4?7 and the diatomic CH(A²?), CN(B²?⁺), NH(A³?) and C₂(d³?_g) fragments. These atomic and molecular products differ from those previously reported in fragmentation of pyrrole and their identification gives a new insight into dissociation and fragmentation channels of the excited states of pyrrole molecules.
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