Dynamics of excimer laser-ablated aluminum neutral atom plume measured by dye laser resonance absorption photography
- 15 April 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 58 (15) , 1597-1599
- https://doi.org/10.1063/1.105136
Abstract
We report the first dye laser resonance absorption photographs of a single species of aluminum ground-state neutral atoms in the plume ablated from solid aluminum by KrF excimer laser radiation. Aluminum ground-state neutral atoms were diagnosed by illuminating the ablated plume with a dye laser tuned to the 32P1/2–42S1/2 transition at 394.4 nm. Measurements have been performed in vacuum as well as in argon and air environments. Streaming velocities measured for neutral aluminum atoms in vacuum ranged from 0.5×106 cm/s at low excimer laser fluences of 1–2 J/cm2 to 3.4×106 cm/s at high fluences of 7 J/cm2. Dye laser resonance absorption photography measurements of ablated aluminum in argon and air showed slower expansion at 50 and 200 Torr, while observations at 760 Torr indicate turbulent mixing of aluminum neutrals near the surface. Differences between data in argon and air may be due to oxidation of neutral aluminum atoms.Keywords
This publication has 16 references indexed in Scilit:
- The significance of a fluence threshold for ultraviolet laser ablation and etching of polymersJournal of Applied Physics, 1990
- Laser diagnostics on magnetically insulated pulsed ion sourcesReview of Scientific Instruments, 1990
- Ultrafast imaging of ultraviolet laser ablation and etching of polymethylmethacrylateApplied Physics Letters, 1989
- Laser beam deflection as a probe of laser ablation of materialsApplied Physics Letters, 1989
- Characterization of ground-state neutral and ion transport during laser ablation of Y1Ba2Cu3O7−x using transient optical absorption spectroscopyApplied Physics Letters, 1989
- Time-resolved spectroscopic study of the KrF laser-induced plasma plume created above an YBaCuO superconducting targetApplied Physics Letters, 1989
- Fast, sensitive laser deflection system suitable for transient plasma analysisReview of Scientific Instruments, 1987
- Laser-induced fluorescence studies of excimer laser ablation of Al2O3Applied Physics Letters, 1986
- Studies of excimer laser ablation of solids using a Michelson interferometerApplied Physics Letters, 1986
- Tubular fast-flow reactor studies at high temperatures. Kinetics of the
A 1O Chemical Physics Letters, 1974