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Proceedings Paper

Low-level measurements of carbon concentrations in steel using laser-induced plasma spectroscopy (LIPS)
Author(s): Mohamed A. Khater; John T. Costello; Jean-Paul Mosnier; Paul van Kampen; Eugene T. Kennedy
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Paper Abstract

Time-integrated, spatially resolved emission spectroscopy, in the deep vacuum ultraviolet (VUV) region (40-160 nm), of laser-produced plasmas has been employed for the quantitative characterization of the carbon content in solid steel target materials; the samples under study contained carbon concentrations in the 0.001-1.32% range. Six prominent VUV carbon spectral lines, representing three different ionization stages, were selected and proved to be spectral-interference free. Several experimental parameters and conditions such as the focusing lens type, laser power density, background atmospheres and pressure were optimized, leading to an unprecedented lower limit of detection, for carbon in solid steel alloys, of 1.2 ppm (parts per million) obtained with the 97.70 nm CIII spectral line. Furthermore, the spectroscopic evaluation of the steel plasma physical parameters is briefly presented.

Paper Details

Date Published: 27 August 2003
PDF: 9 pages
Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); doi: 10.1117/12.464202
Show Author Affiliations
Mohamed A. Khater, Dublin City Univ. (Ireland)
John T. Costello, Dublin City Univ. (Ireland)
Jean-Paul Mosnier, Dublin City Univ. (Ireland)
Paul van Kampen, Dublin City Univ. (Ireland)
Eugene T. Kennedy, Dublin City Univ. (Ireland)

Published in SPIE Proceedings Vol. 4876:
Opto-Ireland 2002: Optics and Photonics Technologies and Applications
Vincent Toal; Norman Douglas McMillan; Gerard M. O'Connor; Eon O'Mongain; Austin F. Duke; John F. Donegan; James A. McLaughlin; Brian D. MacCraith; Werner J. Blau, Editor(s)

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