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Hollow-core optical fiber-based laser-induced breakdown spectroscopy technique for the elemental analysis of pulverized coal

  • S.I. : COLA 2021/2022
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Abstract

The present study proposed and demonstrated the feasibility of the fiber-based LIBS technique for the analysis of pulverized coal. A hollow-core fiber was employed to replace the air medium in the conventional LIBS setup for the delivery of high-power laser pulses to the target. It was observed that the hollow-core fiber could effectively deliver the laser energy for target ablation with a transmission efficiency of 50–60%. The LIBS spectra captured using the fiber LIBS technique prove that the addition of hollow-core fiber can upgrade the conventional LIBS technique into a remote characterization unit. Convincing results were obtained in terms of quantitative carbon measurement using the proposed approach.

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Funding

The authors are thankful to BHEL, Trichy, India, for providing coal samples for the analysis. Part of this work was supported under the UAY 21-105/2015-TS.II/TC.

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Authors and Affiliations

  1. Department of Engineering Design, Indian Institute of Technology Madras, Chennai, 600036, India

    Hemalaxmi Rajavelu & Nilesh J. Vasa

  2. Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, 600036, India

    Satyanarayanan Seshadri

Authors
  1. Hemalaxmi Rajavelu
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  2. Nilesh J. Vasa
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  3. Satyanarayanan Seshadri
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Correspondence to Nilesh J. Vasa.

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Rajavelu, H., Vasa, N.J. & Seshadri, S. Hollow-core optical fiber-based laser-induced breakdown spectroscopy technique for the elemental analysis of pulverized coal. Appl. Phys. A 128, 868 (2022). https://doi.org/10.1007/s00339-022-06007-9

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  • DOI: https://doi.org/10.1007/s00339-022-06007-9

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