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Time-resolved FTIR absorption and emission spectroscopy of species produced in hollow cathode molecular discharges

The study of the different experimental variables affecting the dissociation processes of molecular species, when using hollow cathode discharges as excitation method, and the characterization of the corresponding plasmas, have been made using FTIR absorption and emission spectroscopy. Mass spectrometry has also been employed for diagnosis purposes. The availability of step-scan mode and time resolved possibilities in our FTIR spectrometer, allowed to follow the excitation processes when using modulated discharges. Nitrous oxide, N2O, for which no data in hollow cathode discharges were available, has been employed as test compound for checking the possibilities of our experimental setup.