Two-dimensional space-resolved emission spectroscopy of laser ablation plasma in water
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011 (Japan)
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan)
We developed a method for two-dimensional space-resolved emission spectroscopy of laser-induced plasma in water to investigate the spatial distribution of atomic species involved in the plasma. Using this method, the laser ablation plasma produced on a Cu target in 5 mM NaCl aqueous solution was examined. The emission spectrum varied considerably depending on the detecting position. The temperature and the atomic density ratio N{sub Na}/N{sub Cu} at various detecting positions were evaluated by fitting emission spectra to a theoretical model based on the Boltzmann distribution. We are successful in observing even a small difference between the distributions of the plasma parameters along the directions vertical and horizontal to the surface. The present approach gives direct information for sound understanding of the behavior of laser ablation plasma produced on a solid surface in water.
- OSTI ID:
- 22102252
- Journal Information:
- Journal of Applied Physics, Vol. 113, Issue 5; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABLATION
BOLTZMANN EQUATION
COPPER
ELECTRON TEMPERATURE
EMISSION SPECTRA
EMISSION SPECTROSCOPY
ION TEMPERATURE
LASER RADIATION
LIGHT TRANSMISSION
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
SODIUM CHLORIDES
SOUND WAVES
SPATIAL DISTRIBUTION
SURFACES
TWO-DIMENSIONAL CALCULATIONS
WATER