Catalytic Effects Occurring in the Spatial Afterglow

In some discharge-flow systems notably O2 H2O H2O2 and 

N2 + H2 the yields of products were found to depend on reaction time of the dissociated gases in the spatial afterglow rather than in the plasma itself. When the surface-to-volume (S/V) ratio of the spatial afterglow region was increased in experiments using dissociated water vapor the yield of hydrogen peroxide in a cold trap at 77 K increased to a maximum value and then decreased (Fig. 35). Only in one 

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