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Effect of Methodologies for Laser-Induced Plasma Creation on Hydrogen Sensing
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 Title & Authors
Effect of Methodologies for Laser-Induced Plasma Creation on Hydrogen Sensing
Jang, Jung-Ik; Kim, Ki-Bum;
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 Abstract
As promising future energy source, hydrogen has been drawing much attention; however, it is easily leaked from the small gap in any storage container due to its find molecule size. In this study, Laser induced breakdown spectroscopy(LIBS) was used for hydrogen leak detection, and feasibility of the scheme was evaluated based on different way for plasma generation. Laser power of 295 mW was required for generating plasma on metal surface to measure hydrogen atomic emission while approximately 2.5 times higher laser power was needed for plasma formation directly in the hydrogen gas stream. It was shown that peak to base ratio increased linearly with increasing the concentration of hydrogen. It can be concluded that LIBS is a viable technique for hydrogen sensing when the concentration of hydrogen is less than 5%.
 Keywords
Laser Induced Breakdown Spectroscopy;Leakage;Hydrogen;
 Language
Korean
 Cited by
 References
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2.
Jo, Y.-J., 2007, "Fabrication and Characteristics of Hydrogen Leakage Detection Sensor," thesis for a degree pp.1-3.

3.
Kim, S.-H., 2007, "A Study On The Improvement Of The Accuracy LIBS Through Modulation Of Local Plasma Generation," Thesis for a degree, pp.1-3.

4.
Jang, S., 2014, "Effect of Surface Damage of Metal Substrate on LIBS Signal," Korea Academic Society, pp.1259-1260.