Single-shot femtosecond laser-induced breakdown spectroscopy in low-density gases

E. R. Jans; S. P. Kearney; A. M. Steinberg; M. K. Matzen; N. P. Brown

doi:10.1063/5.0283646

Single-shot femtosecond laser-induced breakdown spectroscopy in low-density gases

E. R. Jans
, S. P. Kearney
, A. M. Steinberg
, M. K. Matzen
, N. P. Brown

Research output: Contribution to journal › Article › peer-review

Abstract

Single-shot fs laser-induced breakdown spectroscopy (LIBS) has been used to interrogate low-density gases of H 2 , CH 4 , CO 2 , and H 2 O ranging from 0.5 × 10 15 to 9.1 × 10 15 cm − 3 (15-275 mTorr). Strong spectral signatures were observed above the noise baseline for each test gas at all densities considered. Unique molecular signatures were observed for both CH 4 and CO 2 along with atomic features for each gas. The LIBS intensity response with respect to density was determined for each species using Voigt lineshape fitting or numerical integration. Finally, the collection and analysis of LIBS spectra of composite mixtures of CH 4 -CO 2 and CH 4 -H 2 demonstrates that the extraction of individual densities from gas mixtures is feasible at low densities.

Original language	English (US)
Article number	123107
Journal	Journal of Applied Physics
Volume	138
Issue number	12
Early online date	Sep 24 2025
DOIs	https://doi.org/10.1063/5.0283646
State	Published - Sep 28 2025
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Physics and Astronomy (miscellaneous)
General Physics and Astronomy

Online availability

10.1063/5.0283646License: CC BY

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Cite this

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title = "Single-shot femtosecond laser-induced breakdown spectroscopy in low-density gases",

abstract = "Single-shot fs laser-induced breakdown spectroscopy (LIBS) has been used to interrogate low-density gases of H 2 , CH 4 , CO 2 , and H 2 O ranging from 0.5 {\texttimes} 10 15 to 9.1 {\texttimes} 10 15 cm − 3 (15-275 mTorr). Strong spectral signatures were observed above the noise baseline for each test gas at all densities considered. Unique molecular signatures were observed for both CH 4 and CO 2 along with atomic features for each gas. The LIBS intensity response with respect to density was determined for each species using Voigt lineshape fitting or numerical integration. Finally, the collection and analysis of LIBS spectra of composite mixtures of CH 4 -CO 2 and CH 4 -H 2 demonstrates that the extraction of individual densities from gas mixtures is feasible at low densities.",

author = "Jans, \{E. R.\} and Kearney, \{S. P.\} and Steinberg, \{A. M.\} and Matzen, \{M. K.\} and Brown, \{N. P.\}",

note = "The authors would like to thank Professor Hyungrok Do of Seoul National University for providing guidance in the early stages of this effort and to various technologists and safety personnel at Sandia National Laboratories for assisting with the experimental setup. This article has been authored by an employee of National Technology \& Engineering Solutions of Sandia, LLC under Contract No. DE-NA0003525 with the U.S. Department of Energy (DOE). The employee owns all right, title, and interest in and to the article and is solely responsible for its contents. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this article or allow others to do so, for United States Government purposes. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan https://www.energy.gov/downloads/doe-public-access-plan . This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government.",

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AU - Brown, N. P.

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N2 - Single-shot fs laser-induced breakdown spectroscopy (LIBS) has been used to interrogate low-density gases of H 2 , CH 4 , CO 2 , and H 2 O ranging from 0.5 × 10 15 to 9.1 × 10 15 cm − 3 (15-275 mTorr). Strong spectral signatures were observed above the noise baseline for each test gas at all densities considered. Unique molecular signatures were observed for both CH 4 and CO 2 along with atomic features for each gas. The LIBS intensity response with respect to density was determined for each species using Voigt lineshape fitting or numerical integration. Finally, the collection and analysis of LIBS spectra of composite mixtures of CH 4 -CO 2 and CH 4 -H 2 demonstrates that the extraction of individual densities from gas mixtures is feasible at low densities.

AB - Single-shot fs laser-induced breakdown spectroscopy (LIBS) has been used to interrogate low-density gases of H 2 , CH 4 , CO 2 , and H 2 O ranging from 0.5 × 10 15 to 9.1 × 10 15 cm − 3 (15-275 mTorr). Strong spectral signatures were observed above the noise baseline for each test gas at all densities considered. Unique molecular signatures were observed for both CH 4 and CO 2 along with atomic features for each gas. The LIBS intensity response with respect to density was determined for each species using Voigt lineshape fitting or numerical integration. Finally, the collection and analysis of LIBS spectra of composite mixtures of CH 4 -CO 2 and CH 4 -H 2 demonstrates that the extraction of individual densities from gas mixtures is feasible at low densities.

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Single-shot femtosecond laser-induced breakdown spectroscopy in low-density gases

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