The reaction of atomic oxygen with several atmospheric ions

Abstract

Cross sections for reactions of atomic. oxygen with the ions H+, 0+ ,N " ,Nt, 0-, and 0, have been measured. The ion energies range from 1 to 500 eV. For all ions, the charge transfer processes have been considered. In addition, for Nt the ion-molecule reaction leading to production of NO+ has been studied. For the charge transfer reactions in which no accidentally resonant pathway exists, cross sections less than 10-17 cm' at 1 eV were measured. Where accidental resonance occurs, cross sections larger than 10-16 cm' at 1 eV were found. For N+, 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.

Coordinate space translation technique for simulation of electronic process in the ion–atom collision

“…is employed in the simulation. The measurements of Rutherford and Vroom 49 Stebbings et al, 50 and Lindsay et al 51 are in excellent agreement with each other, while the results of Van Zyl and Steven 52 agree with each other within the combined uncertainties in the energy range 0.1−10 keV. The projectile is initially separated from the target by 21 a.u.…”

Charge transfer in collisions of O+ with H and H+ with O

“…In Fig. 3 the new QMOCC computations are compared to the experiments of Stebbings et al (1964), Rutherford & Vroom (1974), Van Zyl & Stephen (1992), and Lindsay et al (1996), the QMOCC-FS calculations of Chambaud et al (1980), the QMOCC results of Kimura et al (1997), the electron nuclear dynamics (END) calculations of Hedström et al (1998), and the cross section deduced by detailed balance from the recommended reaction (1) cross section of Janev et al (1995). The current QMOCC is in good agreement with the experimental data for energies less than about 200 eV/u.…”

“…For process (1), the lowest experimental point is at 1.6 eV/u (Fite et al 1962). Rutherford & Vroom (1974) obtained the lowest experimental energy of 2 eV/u for reaction (2).…”

Thermodynamic and Transport Properties of Two-Temperature Nitrogen-Oxygen Plasma

“…Calculated by charge transfer crosssections [42]. 6 e --O Calculated using Q (1) and Q (2) evaluated by Thomas et al [46] and the differential cross-sections of Blaha et al [47].…”