Photoionization of Nitric Oxide

Abstract
The photostationary concentration of ions in gaseous nitric oxide has been measured using a Langmuir probe. The ion concentration depends on the square root of the ion production rate, which indicates that ions and electrons disappear predominately by dissociative recombination. In addition, the rate of decay of the electron concentration in the gas after interruption of the ionizing radiation has been measured. The data indicate that the ion‐electron dissociative recombination rate constant is no greater than 2×10—6 cm3/ion sec, and may be as low as 4×10—7 cm3/ion sec.

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