Until recently, the three-body recombination reaction was widely regarded as the only reaction pathway to the production of molecular oxygen in Earth's prebiotic primitive atmosphere. Observation of a CO2 photodissociation pathway altered this view, but now, using anion velocity imaging, a further source of molecular oxygen is revealed, formed via the dissociative electron attachment to CO2.
- Xu-Dong Wang
- Xiao-Fei Gao
- Shan Xi Tian