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Identification of nitro-compounds with LIBS

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Abstract

Laser-induced breakdown spectroscopy (LIBS) is applied to characterize the organic compounds 4-nitroaniline and 4-nitrotoluene by measuring the intensity of atomic lines. The hypothesis of local thermodynamic equilibrium (LTE) is verified by comparing the measured value of electron density in the laser-induced plasma with its lower limit, for which LTE holds good. The present study infers that the O/N intensity ratio is a unique parameter to discriminate each nitro-compound from the explosives.

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Authors and Affiliations

  1. Laser Spectroscopy Research Laboratory, Department of Physics, Allahabad University, Allahabad, 211002, India

    S. Rai & A.K. Rai

  2. Department of Physics, Banaras Hindu University, Varanasi, 221005, India

    S.N. Thakur

Authors
  1. S. Rai
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  2. A.K. Rai
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  3. S.N. Thakur
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Correspondence to A.K. Rai.

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PACS

42.62.Fi; 52.50.Jm; 78.30.Jw

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Rai, S., Rai, A. & Thakur, S. Identification of nitro-compounds with LIBS. Appl. Phys. B 91, 645–650 (2008). https://doi.org/10.1007/s00340-008-3040-4

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  • DOI: https://doi.org/10.1007/s00340-008-3040-4

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