Abstract
We present results acquired by using in-situ diagnostics based on atomic and molecular oxygen absorption spectroscopy during laser ablation in the presence of an O2 environment. Our investigation provides detailed space- and time-resolved information on the relative density of atomic and molecular oxygen in the plume, and demonstrates a strong correlation between their behavior. The results shed light on the occurrence of reactive-collisional processes involving the ablated material and the environment, leading to O2 dissociation.
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