Electronic-state selective production of oxygen in planetary atmospheres
Abiotic molecular oxygen production -- ionic pathway from sulphur dioxide
We report combined experimental and theoretical evidence for electronic-state-selective production of from a major chemicalconstituent of many planetary atmospheres and one which played an important part on earth in the great oxidation event.
The production involves dissociative double ionisation of leading to efficient formation of the ion which can be converted to abiotic by electron neutralisation.
We suggest that this formation process may contribute significantly to the abundance of and related ions in planetary atmospheres, especially in those where which can lead to production by different mechanisms, is not the dominant component.
Måns Wallner, Mahmoud Jarraya, Saida Ben Yaghlane, Emelie Olsson, Veronica Ideböhn, Richard J. Squibb, Gunnar Nyman, John H.D. Eland, Raimund Feifel, Majdi Hochlaf