Abstract
Carbon monosulfide fragments generated by CS2 photodecomposition at 193 nm were examined by time-resolved observation of their vibration–rotation spectral lines with infrared diode laser kinetic spectroscopy. The CS molecules were found to be initially spread over a wide range of vibrational and rotational levels which were accessible with available energy, for both the triplet and singlet channels leading to sulfur atoms in the 3P ground and 1D excited states, respectively. The analysis of the observed line shape has allowed us to obtain information also on translational energy of CS fragments and to distinguish the contributions of the two channels. The branching ratio was thus estimated to be approximately one to one.
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