Influence of spark discharge on Al(i ) and AlO spectra in femtosecond laser-induced aluminum plasmas
| Autor: | Xiangyu Zeng, Suyu Li, Anmin Chen, Xun Gao, Qiuyun Wang, Yuanfei Jiang, Mingxing Jin, Yutong Chen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
010401 analytical chemistry Analytical chemistry chemistry.chemical_element Plasma Laser 01 natural sciences Spectral line 010305 fluids & plasmas 0104 chemical sciences Analytical Chemistry law.invention chemistry Aluminium law 0103 physical sciences Femtosecond Electrode Spectroscopy Radiant intensity |
| Zdroj: | Journal of Analytical Atomic Spectrometry. 36:1112-1117 |
| ISSN: | 1364-5544 0267-9477 |
| DOI: | 10.1039/d1ja00050k |
| Popis: | In this study, the influence of spark discharge on Al(I) and AlO emission intensities in laser-induced breakdown spectroscopy (LIBS) is investigated experimentally. A femtosecond pulsed laser is used to excite an aluminum sample and produces aluminum plasma between the sample surface and a discharge electrode. The plasma triggers high-voltage spark discharge (SD), enhancing the spectral intensity of the aluminum plasma. The emission of Al atomic lines and AlO bands in the case of the SD is stronger than that in the case using femtosecond LIBS alone. And the spectral intensities of Al(I) lines increase continuously as the discharge voltage increases from 0 kV to 2.0 kV, while AlO molecular emission first increases and then almost remains unchanged. Finally, the vibration temperature of the AlO radical is calculated by fitted AlO emission data, and the vibration temperature of the AlO radical hardly changes with the increase of the discharge voltage. The results indicate that the atomic spectral intensity is sensitive to the discharge voltage, but not the molecular band emission in femtosecond LIBS. |
| Databáze: | OpenAIRE |
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