12 May 2017 Spatial confinement of laser-induced silicon plasma spectroscopy with cylindrical cavity
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Proceedings Volume 10173, Fourth International Symposium on Laser Interaction with Matter; 1017319 (2017) https://doi.org/10.1117/12.2268267
Event: 4th International Symposium on Laser Interaction with Matter, 2016, Chengdu, China
Abstract
In laser-induced breakdown spectroscopy (LIBS), a serious of cylindrical cavities are used to spatially confine the plasmas produced from silicon (Si) target by using a Nd:YAG laser in air. Time-resolved spectrum of Si plasma with different diameters of cylindrical spatial cavities is measured. Compared with the plasmas generated without the confined cavity, the spectral emission intensity of plasma generated with cylindrical cavity is enhanced at a certain delay time. As the diameter of cylindrical cavity increases, the spectral emission is enhanced later in time and the enhancement becomes weaker. The result shows that the presence of the confined cavity leads to an increase in the spectral emission of plasma which is attributed to compressed plasma by the reflected shockwave.
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Ying Wang, Anmin Chen, Mingxing Jin, "Spatial confinement of laser-induced silicon plasma spectroscopy with cylindrical cavity", Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 1017319 (12 May 2017); doi: 10.1117/12.2268267; https://doi.org/10.1117/12.2268267
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