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Schematic of the experimental setup.
Infrared spectra measured (a) in a discharge operating in pure at a pressure of 15 mbars, or (b) in the flowing afterglow (23 cm downstream from the MCSD) in a mixture at atmospheric pressure (with 15 mbars ).
Evolution vs the NO flow of the number density obtained at atmospheric pressure, for a discharge current of 3 mA, in mixtures for different helium flows: , , , , inverted , and .
Evolution vs the discharge current of the number density obtained at atmospheric pressure in a mixture with and NO partial pressures respectively equal to 11 and 0.17 mbars, and a helium flow of 4580 SCCM. The value of the corresponding energy deposited per molecule and the production yield are respectively given in the upper scale and in the right-side scale.
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