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Space and time-resolved laser-induced breakdown spectroscopy using charge-coupled device detection

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  • General Chemistry
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Abstract

Space and time-resolved studies of laser induced plasmas in air at atmospheric pressure are presented. Photovoltaic solar cells have been used as samples. The second harmonic (532 nm) of a Nd: YAG laser at an irradiance of 18 × 1012 W/cm2 has been used. The precise focus of the beam allows a microanalysis at a 0.02 mm2 surface area working in single-shot mode. The use of an intensified charge-coupled device (CCD) detector has allowed time-resolved studies in both imaging or spectroscopy modes. The two-dimensional capability of the CCD has enabled the study of atomic and ionic species distribution along the plume. Most data have been recorded using single-laser shot experiments. Spectral lines have been assigned to transitions in atomic components of the material under investigation in the neutral or ionic states of the corresponding atoms. Effects of delay in improving spectral resolution and some examples of spectral characterization of species as a function of its decay are shown.

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Authors and Affiliations

  1. Faculty of Sciences, Department of Analytical Chemistry, University of Málaga, E-29071, Málaga, Spain

    J. M. Vadillo, M. Milán & J. J. Laserna

Authors
  1. J. M. Vadillo
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  2. M. Milán
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  3. J. J. Laserna
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Vadillo, J.M., Milán, M. & Laserna, J.J. Space and time-resolved laser-induced breakdown spectroscopy using charge-coupled device detection. Fresenius J Anal Chem 355, 10–15 (1996). https://doi.org/10.1007/s0021663550010

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  • DOI: https://doi.org/10.1007/s0021663550010

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