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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 13 — May. 1, 2010
  • pp: C58–C66

Kinetic model of C/H/N/O emissions in laser-induced breakdown spectroscopy of organic compounds

Paul J. Dagdigian, Ani Khachatrian, and Valeri I. Babushok  »View Author Affiliations


Applied Optics, Vol. 49, Issue 13, pp. C58-C66 (2010)
http://dx.doi.org/10.1364/AO.49.000C58


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Abstract

A kinetic model to predict the relative intensities of the atomic C/H/N/O emission lines in laser-induced breakdown spectroscopy (LIBS) has been developed for organic compounds. The model includes a comprehensive set of chemical processes involving both neutral and ionic chemistry and physical excitation and de-excitation of atomic levels affecting the neutral, ionic, and excited-state species concentrations. The relative excited-state atom concentrations predicted by this modeling are compared with those derived from the observed LIBS intensities for 355 nm ns laser irradiation of residues of two organic compounds on aluminum substrate. The model reasonably predicts the relative excited-state concentrations, as well as their time profiles. Comparison of measured and computed concentrations has also allowed an estimation of the degree of air entrainment.

© 2010 Optical Society of America

OCIS Codes
(000.1570) General : Chemistry
(350.5400) Other areas of optics : Plasmas
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

History
Original Manuscript: September 18, 2009
Revised Manuscript: January 12, 2010
Manuscript Accepted: January 15, 2010
Published: February 24, 2010

Citation
Paul J. Dagdigian, Ani Khachatrian, and Valeri I. Babushok, "Kinetic model of C/H/N/O emissions in laser-induced breakdown spectroscopy of organic compounds," Appl. Opt. 49, C58-C66 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-13-C58


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