Comparison of Laser-Induced Breakdown Spectra of Organic Compounds with Irradiation at 1.5 and 1.064 micrometers

Abstract

A comprehensive investigation of laser-induced breakdown spectroscopy (LIBS) at 1.500 micrometers of residues of six organic compounds (anthracene, caffeine, glucose, 1,3-dinitrobenzene, 2,4-dinitrophenol, and 2,4-dinitrotoluene) on aluminum substrates is presented and compared with LIBS at the Nd:YAG fundamental wavelength of 1.064 micrometers. The overall emission intensities were found to be smaller at 1.500 micrometers than at 1:064 micrometers, and the ratios of C2 and CN molecular emissions to the H atomic emissions were observed to be less. Possible reasons for the observed differences in LIBS at 1.064 micrometers versus 1.500 micrometers are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2008
Accession Number
ADA519718

Entities

People

  • Diane M. Wong
  • Paul J. Dagdigian

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alcohols
  • Aluminum Foil
  • Aromatic Compounds
  • Chemical Synthesis
  • Chemistry
  • Detection
  • Detectors
  • Electron Density
  • Electrons
  • Laser Beams
  • Laser Pulses
  • Laser-Induced Breakdown Spectroscopy
  • Lasers
  • Optical Fibers
  • Organic Compounds
  • Radiation
  • Spectra

Fields of Study

  • Physics

Readers

  • Agricultural Chemistry/Soil Science
  • Molecular Photonics/Laser Physics
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy