title: Semi-Automatic Elemental Identification of Laser-Induced Breakdown Spectra Using Wavelength Similarity Coefficient.
abstract: This work proposes a method to perform elemental identification on plasmas produced using the laser-induced breakdown spectroscopy (LIBS) technique. The method is based on the preservation of the relative relevance of the spectral line emission intensities, which is lost during the parametric correlation procedure, by the introduction of a similitude coefficient called wavelength similarity coefficient. Furthermore, it was shown that for identification purposes, a simplified plasma model is sufficient to predict adequately the relative emission intensities in LIBS plasmas. As a result, it is possible to automatically identify the species with high emission signals, while trace detection is also possible by relaxing search conditions, although manual refinement is still required.
authors.affiliation: Centro de Investigaciones en Optica A.C., Guanajuato, Mexico.
authors.forename: Igancio
authors.initials: I
authors.lastname: Rosas-Román
authors.affiliation: Centro de Investigaciones en Optica A.C., Guanajuato, Mexico.
authors.forename: Marco A
authors.initials: MA
authors.lastname: Meneses-Nava
authors.affiliation: Centro de Investigaciones en Optica A.C., Guanajuato, Mexico.
authors.forename: Oracio
authors.initials: O
authors.lastname: Barbosa-García
authors.affiliation: Centro de Investigaciones en Optica A.C., Guanajuato, Mexico.
authors.forename: Jose L
authors.initials: JL
authors.lastname: Maldonado
keywords: LIBS; Laser-induced breakdown spectroscopy; elemental identification; wavelength similarity coefficient