Laser-induced breakdown spectroscopy of metals covered by water droplets

L.M. Cabalín, A. González, V. Lazic, J.J. Laserna

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Abstract

LIBS analyses of deep metallic layers were performed by dual-pulse excitation, where the first laser pulse efficiently ablates material covered by poly-dispersed water aerosol and water droplets, and the second laser pulse generates the analytical plasma on the crater's bottom. Enhancement of ablation rate in presence of water confinement was studied on various pure metals, namely Sn, Pb, Zn, Al, Cu, Fe, W, Ti and Mo. Crater depths and shapes were measured comparatively for dry surfaces and the same covered with water aerosol and water droplets of various volumes, and at different laser energies. With wet ablation using water droplet the mass removal efficiency was increased up to 20 times with respect to a dry process. The correlation between ablated mass and the thermal and mechanical properties of the examined metals was also studied. © 2012 Elsevier B.V.
Original languageEnglish
Pages (from-to)95 - 102
Number of pages8
JournalSpectrochimica Acta, Part B: Atomic Spectroscopy
Volume74-75
DOIs
Publication statusPublished - Aug 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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