Production of ozone and nitrogen oxides by laser filamentation

Petit, Yannick; Henin, Stefano; Kasparian, Jérôme; Wolf, Jean-Pierre
July 2010
Applied Physics Letters;7/12/2010, Vol. 97 Issue 2, p021108
Academic Journal
We have experimentally measured that laser filaments in air generate up to 1014, 3×1012, and 3×1013 molecules of O3, NO, and NO2, respectively. The corresponding local concentrations in the filament active volume are 1016, 3×1014, and 3×1015 cm-3, and allows efficient oxidative chemistry of nitrogen, resulting in concentrations of HNO3 in the parts per million range. The latter forming binary clusters with water, our results provide a plausible pathway for the efficient nucleation recently observed in laser filaments.


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