LAUSR

Numerical 0-D kinetic model has been developed to simulate detailed kinetics of the ground and excited electronic states of atmospheric gases occurring under streamer discharge conditions. The model is based on an extended kinetic scheme, which includes state-to-state vibrational kinetics of the ground electronic states of Nlsubg2l/subg, Olsubg2l/subg and NO diatomics including e-V, V-V, and V-T energy transfers and contains about 10lsupg4l/supg processes for more than 500 tracked state-specific as well as state-non-specific species (including higher excited and autoionizing states of NlsupgIl/supg/OlsupgIl/supg species), as well as for state-non-specific species. The scheme takes into account the most important radiative processes which are of diagnostic interest and occurring in Nlsubg2l/subg and Nlsubg2l/subg-Olsubg2l/subg mixtures, including the extreme ultraviolet and vacuum ultraviolet radiation produced by many excited and autoionizing states of NlsupgIl/supg/OlsupgIl/supg. The dependence of the rates of electron impact processes on the reduced electric field E/N is found by solving the electron Boltzmann equation in the two-term approximation using BOLtzmann equation solver Open Source library (BOLOS). We have inspected several test cases; pure nitrogen at 50 and 200 torr and synthetic air at 10, 50 and 760 torr. Numerical results obtained in pure nitrogen case were compared with experimental results recently obtained by LIF on Nlsubg2l/subg(Alsupg3l/supgΣlsubgul/subglsupg+l/supg) metastables. Good qualitative agreement between numerical simulation and experiments observed on v=2-5 vibronic levels gives an important feedback on the appropriateness of the kinetic scheme. Numerical results were also used to find some general spectrometric signatures which might be helpful for the development of diagnostic procedures.