Confinement effect of laser ablation plume in liquids probed by self-absorption of C{sub 2} Swan band emission

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1828214· OSTI ID:20664977

Sakka, Tetsuo; Saito, Kotaro; Ogata, Yukio H ^[1]

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1. Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011 (Japan)

The (0,0) Swan band of the C{sub 2} molecules in a laser ablation plume produced on the surface of graphite target submerged in water was used as a probe to estimate the density of C{sub 2} molecules in the plume. Observed emission spectra were reproduced excellently by introducing a self-absorption parameter to the theoretical spectral profile expected by a rotational population distribution at a certain temperature. The optical density of the ablation plume as a function of time was determined as a best-fit parameter by the quantitative fitting of the whole spectral profile. The results show high optical densities for the laser ablation plume in water compared with that in air. It is related to the plume confinement or the expansion, which are the important phenomena influencing the characteristics of laser ablation plumes in liquids.

• OSTI ID: 20664977
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 1 Vol. 97; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
AIR
CONFINEMENT
EMISSION SPECTRA
EXPANSION
GRAPHITE
LASERS
LIQUIDS
MOLECULES
OPACITY
PLUMES
ROTATIONAL STATES
SELF-ABSORPTION
SURFACES
TIME DEPENDENCE
WATER