Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer Scientific paper

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Milica Vinić
Miroslav Kuzmanović
Jelena Savović
Milivoje Ivković


In this study, plasma induced by a nanosecond Nd:YAG laser on thin oil films deposited on a silica wafer was characterized by evaluating the main plasma parameters. Spatially and temporally integrated spectral measurements were performed under experimental conditions optimized for elemental ana­lysis of trace metals in oil. Time-resolved values of the spectral line intensities, electron number density, and plasma temperature were obtained from time-int­egrated measurements by subtracting averaged spectra recorded at different time delays. The electron number density was estimated using the Stark broad­ened profile of the hydrogen Balmer alpha line. Ionization temperatures were derived from Mg ionic to atomic line intensity ratios. The obtained apparent values of time-resolved plasma parameters were in the range of 1.1×1017 cm-3 (1.5 μs) to 1.5×1016 cm-3 (4 μs) and 9400 K (3 μs) to 7200 K (5 μs), depending on the delay time. Emission spectra of C2 and CN molecules were used to eva­luate the rotational and vibrational temperature.


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How to Cite
M. Vinić, M. Kuzmanović, J. Savović, and M. Ivković, “Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer: Scientific paper”, J. Serb. Chem. Soc., vol. 88, no. 2, pp. 153–167, Jul. 2022.
Analytical Chemistry
Author Biography

Miroslav Kuzmanović, Faculty of Physical Chemistry, University of Belgrade, Belgrade, Serbia


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