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Laser-induced breakdown spectroscopy enhanced by a micro torch

hal.structure.identifierDepartment of Electrical Engineering
dc.contributor.authorLIU, Lei
hal.structure.identifierDepartment of Electrical Engineering
dc.contributor.authorHUANG, Xi
hal.structure.identifierDepartment of Electrical and Computer Engineering [Pittsburgh]
dc.contributor.authorLI, Shuo
hal.structure.identifierDepartment of Electrical Engineering
dc.contributor.authorLU, Yao
hal.structure.identifierDepartment of Electrical and Computer Engineering [Pittsburgh]
dc.contributor.authorCHEN, Kevin
hal.structure.identifierSchool of Mechanical Engineering
dc.contributor.authorJIANG, Lan
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSILVAIN, Jean-François
hal.structure.identifierDepartment of Electrical Engineering
dc.contributor.authorLU, Yong Feng
dc.date.issued2015
dc.identifier.issn1094-4087
dc.description.abstractEnA commercial butane micron troch was used to enhance plasma optical emissions in laser-induced breakdown spectroscopy (LIBS). Fast imaging and spectroscopic analyses were used to observe plasma evolution in the atmospheric pressure for LIBS without and with using a micro torch. Optical emission intensities and signal-to-noise ratios (SNRs) as functions of delay time were studied. Enhanced optical emission and SNRs were obtained by using a micro torch. The effects of laser pulse energy on the emission intensities and SNRs were studied. The same spectral intensity could be obtained using micro torch with much lower laser pulse energy. The investigation of SNR evolution with delay time at different laser pulse energies showed that the SNR enhancement factor is higher for plasmas generated by lower laser pulse energies than those generated by higher laser energies. The calibration curves of emission line intensities with elemental concentrations showed that detection sensitivities of Mn I 404.136 nm and V I 437.923 nm were improved by around 3 times. The limits of detection for both Mn I 404.136 nm and V I 437.923 nm are reduced from 425 and 42 ppm to 139 and 20 ppm, respectively, after using the micro torch. The LIBS system with micro torch was demonstrated to be cost-effective, compact, and capable of sensitivity improvement, especially for LIBS system operating with low laser pulse energy.
dc.language.isoen
dc.publisherOptical Society of America - OSA Publishing
dc.subject.enOCIS codes: (300
dc.subject.en6365) Spectroscopy
dc.subject.enlaser induced breakdown
dc.subject.en(350
dc.subject.en5400) Plasmas
dc.title.enLaser-induced breakdown spectroscopy enhanced by a micro torch
dc.typeArticle de revue
dc.identifier.doi10.1364/OE.23.015047
dc.subject.halChimie/Matériaux
bordeaux.journalOptics Express
bordeaux.page15047-15056
bordeaux.volume23
bordeaux.issue11
bordeaux.peerReviewedoui
hal.identifierhal-01160308
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01160308v1
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