The reaction of atomic oxygen with several atmospheric ions

摘要

Cross sections for reactions of atomic oxygen with the ionsHplus;,thinsp;Oplus;,Nplus;,N2plus;,thinsp;Ominus;, andO2minus;have been measured. The ion energies range from 1 to 500 eV. For all ions, the charge transfer processes have been considered. In addition, forN2plus;the ionhyphen;molecule reaction leading to production of NOplus;has been studied. For the charge transfer reactions in which no accidentally resonant pathway exists, cross sections less than 10minus;17cm2at 1 eV were measured. Where accidental resonance occurs, cross sections larger than 10minus;16cm2at 1 eV were found. For Nplus;, both the ground and excited states of the ion were used in the measurements. The method used to form the atomic oxygen beam is discussed.