Elemental chemical analysis of submerged targets by double-pulse laser-induced breakdown spectroscopy |
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Authors: | A. De Giacomo M. Dell’Aglio A. Casavola G. Colonna O. De Pascale M. Capitelli |
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Affiliation: | (1) Chemistry Department, University of Bari, Via Orabona 4, 70126 Bari, Italy;(2) CNR-IMIP sec Bari, Via Amendola 122/D, 70126 Bari, Italy |
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Abstract: | Double-pulse laser-induced plasma spectroscopy (DP-LIPS) is applied to submerged targets to investigate its feasibility for elemental analysis. The role of experimental parameters, such as inter-pulse delay and detection time, has been discussed in terms of the dynamics of the laser-induced bubble produced by the first pulse and its confinement effect on the plasma produced by the second laser pulse. The analytical performance of this technique applied to targets in a water environment are discussed. The elemental analysis of submerged copper alloys by DP-LIPS has been compared with conventional (single-pulse) LIBS in air. Theoretical investigation of the plasma dynamics in water bubbles and open air has been performed. |
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Keywords: | Laser-induced plasma spectroscopy Copper alloys Elemental analysis |
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