Resonance charge exchange and collision integrals for O(3P)–O+(4S) and O(1D)–O+(4S) interactions

Abstract

Oxygen atom (O) collision with oxygen ions (O⁺) plays a crucial role in air plasma systems. This work presents a theoretical study of inelastic (resonance charge transfer), elastic, and total collision integrals for O(³P)–O⁺(⁴S) and O(¹D)–O⁺(⁴S) interactions in the temperature range of 500–50 000 K. The calculation is performed using the semi-classical method, based on the high-level potential energy curves obtained by the state-of-the-art ab initio method. The resonance charge exchange cross sections are in good agreement with those experiment values. The contributions of elastic and inelastic collision processes to the diffusion collision integrals are quantitatively estimated. The calculated collision data can be used to support the simulation of high-temperature air plasmas.