Abstract
In this paper, we report a strong enhanced emission from laser produced plasma in air from iron oxide nano-material in comparison with the corresponding bulk samples. The enhancement strength differs with different Nd:YAG laser harmonics wavelengths. The analysis showed that such enhancement increased exponentially with the plasma evolution time, while it declines as the laser fluence increased. Experimental data analysis clearly showed that the observed enhancement is mainly associated with the change in the plasma electron density. We claim that this strong enhanced optical emission from laser produced plasma is due to the surface plasmon resonant excitation preferably on nano-oxide materials. Such experimental findings could improve the laser-induced breakdown spectroscopy sensitivity down to extremely low concentrations.
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Rashid, F.F., ELSherbini, A.M. & Al-Muhamady, A. Strong emission from nano-iron using laser-induced breakdown spectroscopy technique. Appl. Phys. A 115, 1395–1399 (2014). https://doi.org/10.1007/s00339-013-8049-9
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DOI: https://doi.org/10.1007/s00339-013-8049-9