Extracting Time-Resolved Information from Time-Integrated Laser-Induced Breakdown Spectra. (29th December 2014)

• Record Type: Journal Article
• Authors: Grifoni, Emanuela; Legnaioli, Stefano; Lezzerini, Marco; Lorenzetti, Giulia; Pagnotta, Stefano; Palleschi, Vincenzo
• Other Names: Lazic Violeta Academic Editor.
• Is Part Of: Journal of spectroscopy. Volume 2014(2014)
• Publication Date: 2014-12-29
• Subjects: Spectrum analysis -- Periodicals; 543.505
• DOI: 10.1155/2014/849310
• Languages: English
• ISSNs: 2314-4920

Abstract

Abstract : Laser-induced breakdown spectroscopy (LIBS) data are characterized by a strong dependence on the acquisition time after the onset of the laser plasma. However, time-resolved broadband spectrometers are expensive and often not suitable for being used in portable LIBS instruments. In this paper we will show how the analysis of a series of LIBS spectra, taken at different delays after the laser pulse, allows the recovery of time-resolved spectral information. The comparison of such spectra is presented for the analysis of an aluminium alloy. The plasma parameters (electron temperature and number density) are evaluated, starting from the time-integrated and time-resolved spectra, respectively. The results are compared and discussed.