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arXiv · 1612.07205

First ionization potential measurements using laser-induced breakdown spectroscopy

Ahsraf M. EL Sherbini·Mohamed M. EL Faham·Christian G. Parigger
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Abstract

The first ionization potential of neutral atoms is determined from thresholds of laser-induced optical breakdown. Bulk material ablation plasma of aluminum, silver, lead, indium and copper is created in laboratory air with focused, 5-ns pulsed Nd:YAG, 1064 nm IR radiation. At fixed spot size of 2 $\pm$ 0.1 mm, the laser fluence is varied from 16 to 3 J/cm$^2$. The first ionization potentials of the lines Al I 396.2, Ag I 520.9, Pb I 405.8 and 406.2, In I 410.2 and Cu I 515.3 nm are measured to amount to 5.9 $\pm$ 0.2, 7.6 $\pm$ 0.3, 7.4 $\pm$ 0.2, 5.8 $\pm$ 0.1 and 7.7 $\pm$ 0.2 eV, respectively.

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Ahsraf M. EL Sherbini, Mohamed M. EL Faham, Christian G. Parigger. 2016-12-09. First ionization potential measurements using laser-induced breakdown spectroscopy. https://arxiv.org/abs/1612.07205

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