April 24, 2025
Journal Article

Impact of Target-Derived and Airborne Oxygen on Gas-Phase Oxidation in Laser Ablation Plumes

Abstract

In this study, we investigate the role of target-derived and airborne oxygen on AlO formation in plasmas generated from Al and Al2O3 targets in air and argon, respectively, to elucidate the influence of shockwaves on gas-phase oxidation. Our results highlight that gas-phase oxidation occurs early during the evolution of Al2O3 plasmas in argon, in contrast to Al plasmas in air, where the shockwave acts as a barrier, mediating the plasma chemistry.

Published: April 24, 2025

Citation

Wallace S.C., A.K. Shaik, M.C. Phillips, and S.S. Harilal. 2024. Impact of Target-Derived and Airborne Oxygen on Gas-Phase Oxidation in Laser Ablation Plumes. Optics Letters 49, no. 24:7178-7181. PNNL-SA-204008. doi:10.1364/OL.543518

Research topics