Temperature dependent quenching of A 2Σ+ NO between 215 and 300 K

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Abstract
Collisional quenching of the v’=0 vibrational level of the A 2Σ+ state of nitric oxide has been studied over the temperature range 215 to 300 K for the collision partners CO2, O2, H2O, NH3, H2S, and NO itself. The pressure dependence of the time decay of laser‐induced fluorescence furnished the quenching cross sections σQ. The temperature is measured in situ. For all colliders, σQ is large and increases as the temperature decreases; this includes NO and O2 which do not show a temperature dependence above 300 K. The temperature dependence of σQ for each collider can be adequately described by the simple attractive force model of Parmenter and co‐workers.