Impact of target-derived and ambient oxygen on gas-phase oxidation in laser ablation plumes
Gas-phase oxidation in a laser-produced plasma is significantly influenced by the availability of oxygen in and around the plume. In this study, we investigate the role of target-derived and ambient oxygen on AlO formation in plasmas generated from aluminum (Al) and Al<sub>2</sub>O<sub>3</sub> targets in air and argon, respectively. Our results highlight that gas-phase oxidation occurs early during the evolution of Al<sub>2</sub>O<sub>3</sub> plasmas in argon, in contrast to Al plasmas in air, where the initial exclusion of oxygen from the plume delays the chemical reactions.
Authors
- Mark C. Phillips (ORCID: https://orcid.org/0000-0001-6566-7808)
- Abdul Kalam Shaik (ORCID: https://orcid.org/0000-0001-9704-9254)
- Stephen Wallace (ORCID: https://orcid.org/0000-0003-1391-5800)
- S. S. Harilal (ORCID: https://orcid.org/0000-0003-2266-7976)
Institutions
- University of Arizona (US)
- South Dakota School of Mines and Technology (US)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-11-13
- DOI
- https://doi.org/10.1364/ol.543518
- Citations
- 5
- Primary Topic
- Laser-induced spectroscopy and plasma
- Type
- article
- Field-Weighted Citation Impact
- 1.35
Funders
- U.S. Department of Energy
- Defense Threat Reduction Agency