Collision spectroscopy of O⁶⁺ and N⁶⁺ colliding on a He target

Angularly resolved (0-0.15 deg) energy gain measurement provides a detailed analysis of the dominant processes involved in low-energy charge transfer reactions of O⁶⁺ and N⁶⁺ on a He target. Influence of short distance interactions for population of minor one-electron capture channels is demonstrated. Special emphasis is given to two-electron capture processes. The authors' data are compared with available theoretical and experimental results concerning C^6-, N⁶⁺ and O⁶⁺ ions colliding with a He target.