Energy transfer in a nitrogen afterglow in the presence of activated oxygen

Efstathios Kamaratos

doi:10.1117/12.513591

9 April 2003 Energy transfer in a nitrogen afterglow in the presence of activated oxygen

Efstathios Kamaratos

Proceedings Volume 5131, Third GR-I International Conference on New Laser Technologies and Applications; (2003) https://doi.org/10.1117/12.513591
Event: Third GR-I International Conference on New Laser Technologies and Applications, 2003, San Diego, CA, United States

Abstract

New developments are reported on the over one century old topic of collisional energy transfer in a nitrogen afterglow with active oxygen species without a metal catalyst and even at much higher pressures than those in previous experiments. This report is centered mainly on the changes in the normal distribution of intensities of various electronic-vibrational transitions of the first positive band system (1pbs) of molecular nitrogen, (formula available in paper) in the visible and the IR part of the spectrum, some of which are reported for the first time. A study of the variation of the concentrations of active oxygen species is also reported, in order to establish the mechanism of the energy transfer that is responsible for the enhanced emissions of the 1 pbs of N₂. Also the present experimental results show that, contrary to previous research over the last more than 40 years, the observed enhancement of emissions of the N₂ 1pbs results from homogeneous collisional intersystem excitation transfer into (formula available in paper) induced by excited molecular oxygen. Probing of this enhancement of emissions for lasing is suggested. Possible implications of this phenomenon are commented, some of which even suggest reinterpretation of energy transfer experiments between some activated nitrogen and oxygen species.

Citation Download Citation

Efstathios Kamaratos "Energy transfer in a nitrogen afterglow in the presence of activated oxygen", Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); https://doi.org/10.1117/12.513591

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