Nd:YAG-CO(2) double-pulse laser induced breakdown spectroscopy of organic films.
Laser-induced breakdown spectroscopy (LIBS) using double-pulse irradiation with Nd:YAG and CO(2) 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 C(2) 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 C(2) emission was detected.
Weidman
Matthew
M
Townes Laser Institute, CREOL - The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA. mweidman@creol.ucf.edu
Baudelet
Matthieu
M
Palanco
Santiago
S
Sigman
Michael
M
Dagdigian
Paul J
PJ
Richardson
Martin
M
D054020:Lasers, Gas; D008422:Materials Testing / Q000379:methods*; D008567:Membranes, Artificial; D009930:Organic Chemicals / Q000737:chemistry* / Q000528:radiation effects*; D013057:Spectrum Analysis / Q000379:methods*
D008567:Membranes, Artificial; D009930:Organic Chemicals