Investigation of the self-absorption effect using time-resolved laser-induced breakdown spectroscopy

Yun Tang, Shixiang Ma, Yanwu Chu, Tao Wu, Yuyang Ma, Zhenlin Hu, Lianbo Guo, Xiaoyan Zeng, Jun Duan, Yongfeng Lu

Research output: Contribution to journalArticle

Abstract

Self-absorption seriously affects the accuracy and stability of quantitative analysis in laser-induced breakdown spectroscopy (LIBS). To reduce the effect of self-absorption, we investigated the temporal evolution of the self-absorption effect by establishing exponential calibration curves. Meanwhile, the temporal evolution mechanism of the self-absorption effect was also investigated. The results indicated that self-absorption was weak at the early stage of plasma expansion. For determination of manganese (Mn) in steel, as an example, the concentration of upper bound of linearity (C int ) was 2.000 wt. % at the early stage of plasma expansion (in a time window of 0.2-0.4 μs)-much higher than 0.363 wt. % at a traditional optimization time window (2-3 μs). The accuracy and stability of quantitative analysis at the time window of 0.2-0.4 μs was also much better than at the time window of 2-3 μs. This work provides a simple method for improving quantitative analysis performance and avoiding the self-absorption effect in LIBS.

Original languageEnglish (US)
Pages (from-to)4261-4270
Number of pages10
JournalOptics Express
Volume27
Issue number4
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

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laser-induced breakdown spectroscopy
self absorption
quantitative analysis
expansion
linearity
manganese
steels
optimization
curves

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Investigation of the self-absorption effect using time-resolved laser-induced breakdown spectroscopy. / Tang, Yun; Ma, Shixiang; Chu, Yanwu; Wu, Tao; Ma, Yuyang; Hu, Zhenlin; Guo, Lianbo; Zeng, Xiaoyan; Duan, Jun; Lu, Yongfeng.

In: Optics Express, Vol. 27, No. 4, 01.01.2019, p. 4261-4270.

Research output: Contribution to journalArticle

Tang, Y, Ma, S, Chu, Y, Wu, T, Ma, Y, Hu, Z, Guo, L, Zeng, X, Duan, J & Lu, Y 2019, 'Investigation of the self-absorption effect using time-resolved laser-induced breakdown spectroscopy', Optics Express, vol. 27, no. 4, pp. 4261-4270. https://doi.org/10.1364/OE.27.004261
Tang, Yun ; Ma, Shixiang ; Chu, Yanwu ; Wu, Tao ; Ma, Yuyang ; Hu, Zhenlin ; Guo, Lianbo ; Zeng, Xiaoyan ; Duan, Jun ; Lu, Yongfeng. / Investigation of the self-absorption effect using time-resolved laser-induced breakdown spectroscopy. In: Optics Express. 2019 ; Vol. 27, No. 4. pp. 4261-4270.
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