Reduction of self-absorption in femtosecond laser-induced breakdown spectroscopy using spark discharge

The self-absorption effect of femtosecond laser-induced breakdown spectroscopy (LIBS) of aluminum with and without spark discharge is investigated in air. The measured time-resolved spectra show strong self-absorption/self-reversal in the absence of spark discharge. Still, when spark discharge is us...

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Veröffentlicht in:Physics of plasmas 2021-08, Vol.28 (8)
Hauptverfasser: Wang, Qiuyun, Chen, Anmin, Liu, Yitong, Gao, Xun, Jin, Mingxing
Format: Artikel
Sprache:eng
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Zusammenfassung:The self-absorption effect of femtosecond laser-induced breakdown spectroscopy (LIBS) of aluminum with and without spark discharge is investigated in air. The measured time-resolved spectra show strong self-absorption/self-reversal in the absence of spark discharge. Still, when spark discharge is used to enhance the spectral intensity of LIBS, almost no self-reversal effect can be observed from time-resolved spectra. The results show that spark discharge can effectively reduce the self-absorption effect and improve spectral intensity in femtosecond-LIBS.
ISSN:1070-664X
1089-7674
DOI:10.1063/5.0051244