Nd:YAG-CO2 double-pulse laser induced breakdown spectroscopy of organic films

Authors :: UNIVERSITY OF CENTRAL FLORIDA ORLANDO COLLEGE OF OPTICS AND PHOTONICS
Weidman, Matthew
Baudelet, Matthieu
Palanco, Santiago
Sigman, Michael
Dagdigian, Paul J.
Richardson, Martin
UNIVERSITY OF CENTRAL FLORIDA ORLANDO COLLEGE OF OPTICS AND PHOTONICS
Weidman, Matthew
Baudelet, Matthieu
Palanco, Santiago
Sigman, Michael
Dagdigian, Paul J.
Richardson, Martin
Source :: DTIC
Publication Year :: 2010
Abstract: Laser-induced breakdown spectroscopy (LIBS) using doublepulse irradiation with Nd:YAG and CO2 lasers was applied to the analysis of a polystyrene film on a silicon substrate. An enhanced emission signal, compared to single-pulse LIBS using a Nd:YAG laser, was observed from atomic carbon, as well as enhanced molecular emission from C2 and CN. This double-pulse technique was further applied to 2,4,6-trinitrotoluene residues, and enhanced LIBS signals for both atomic carbon and molecular CN emission were observed; however, no molecular C2 emission was detected.<br />Pub. in Optics Express, v18 n1, p259-266, 5 Jan 2010.

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