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19 October 2016 Measurements of electron number density and plasma temperature using LIBS
Xiao-xia Zhao, Wen-feng Luo, Jun-fang He, Hong-ying Wang, Sen-lin Yang, Yuan-yuan Li
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Proceedings Volume 10152, High Power Lasers, High Energy Lasers, and Silicon-based Photonic Integration; 101520D (2016) https://doi.org/10.1117/12.2245057
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
Plasma produced by the radiation of a 1064 nm Nd:YAG laser focused onto a standard aluminum alloy E311 was studied spectroscopically. The electron density was inferred by measuring the Stark broadened line profile of Cu I 324.75 nm at a distance of 1.5 mm from the target surface with the laser irradiance of 3.27 GW/cm2. The electron temperature was determined using the Boltzmann plot method with eight neutral iron lines. At the same time, the validity of the assumption of local thermodynamic equilibrium was discussed in light of the results obtained.
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Xiao-xia Zhao, Wen-feng Luo, Jun-fang He, Hong-ying Wang, Sen-lin Yang, and Yuan-yuan Li "Measurements of electron number density and plasma temperature using LIBS", Proc. SPIE 10152, High Power Lasers, High Energy Lasers, and Silicon-based Photonic Integration, 101520D (19 October 2016); https://doi.org/10.1117/12.2245057
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KEYWORDS
Laser induced breakdown spectroscopy
Plasma
Plasma spectroscopy
Single photon emission computed tomography
Temperature metrology
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