Double-pulse LIBS combining short and long nanosecond pulses in the microjoule range

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DOIResolve DOI: http://doi.org/10.1039/c4ja00099d
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume29
Issue9
Pages16601666; # of pages: 7
SubjectSpectrometry; Analytical performance; Chronological sequences; Double-pulse LIBS; Field application; Limits of detection; Nanosecond pulse; Plasma temperature; Signal-to-background ratio; Measurements
AbstractThe present study investigates the collinear double-pulse LIBS (DP-LIBS) configuration using microjoule nanosecond pulses. It is shown that this approach can achieve typical double pulse improvement in the analytical performances for elemental analysis of aluminium alloys. In addition, the effect of the chronological sequence of the short and long nanosecond pulses in the collinear DP-LIBS experiment was also studied. The results show a significant increase of the intensity and repeatability of the emission signals in the double pulse configuration. Standard DP-LIBS signal improvement over the signal-to-noise ratio and the signal-to-background ratio for the analytical lines of different elements has been observed in comparison to single pulse LIBS of equal energy. Limits of detection in the low μg g-1 range have been obtained for the different elements studied. The improvement resulting from the use of DP-LIBS was about 2-4 fold when compared to SP-LIBS in all cases. These results are useful in the context of studies investigating how the μLIBS will assist in the development of portable LIBS systems and improve the utility of this spectroscopy technique for field applications. Finally, the plasma temperature is found to be approximately less than 15% higher with the double-pulse.
Publication date
PublisherRoyal Society of Chemistry
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment
Peer reviewedYes
NPARC number21272883
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Record identifierd62eed44-b5f7-45b9-911a-35e309494d86
Record created2014-12-03
Record modified2016-05-09
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