Open AccessFemtosecond and nanosecond laser-induced breakdown spectroscopy of trinitrotoluene
Author(s) -
Yamaç Dikmelik,
Caroline McEnnis,
James B. Spicer
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.005332
Subject(s) - femtosecond , laser induced breakdown spectroscopy , nanosecond , materials science , explosive material , spectroscopy , laser , substrate (aquarium) , optics , trinitrotoluene , emission spectrum , optoelectronics , chemistry , spectral line , physics , oceanography , organic chemistry , quantum mechanics , astronomy , geology
Femtosecond and nanosecond laser-induced breakdown spectroscopy (LIBS) were used to study trinitrotoluene (TNT) deposited on aluminum substrates. Over the detection wavelength range of 200-785 nm, we have observed emission from CN and C(2) molecules as the marker for the explosive with femtosecond LIBS. In contrast, the signal for nanosecond LIBS of TNT is dominated by emission from the elemental constituents of the explosive. Aluminum emission lines from the substrate are also observed with both femtosecond and nanosecond excitation and indicate the role played by the substrate in the interaction.