First ionization potential measurements using laser-induced breakdown spectroscopy

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 \(...

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Bibliographic Details
Published in:arXiv.org 2016-12
Main Authors: EL Sherbini, Ahsraf M, EL Faham, Mohamed M, Parigger, Christian G
Format: Article
Language:English
Subjects:
Aluminum
Copper
First ionization potential
Fluence
Infrared radiation
Ionization potentials
Ions
Laser induced breakdown spectroscopy
Lasers
Neutral atoms
Silver
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Summary: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.
ISSN:2331-8422