Atomic oxygen recombination at the wall in a time afterglow

Abstract
Atomic oxygen ground state density is measured in the time afterglow of a pulsed discharge with resonant absorption spectroscopy in the vacuum ultraviolet range. The evolution of atomic density during the afterglow is a sum of two exponential decays. The recombination probability at the pyrex wall of the discharge tube is deduced from the fastest decay. The so obtained value is γ= (2.4 ±1.1) ×10-3. Interpretations of the slowest decay as possible atomic gain are brought up in the discussion

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