Signal Detection of Carbon in Iron-Based Alloy by Double-Pulse Laser-Induced Breakdown Spectroscopysupported by National Natural Science Foundation of China (No. 51374040) and the National Key Scientific Instrument and Equipment Development Project of China (No. 2014YQ120351)
Although single-pulse lasers are often used in traditional laser-induced breakdown spectroscopy (LIBS) measurements, their measurement outcomes are generally undesirable because of the low sensitivity of carbon in iron-based alloys. In this article, a double-pulse laser was applied to improve the si...
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Published in | Plasma science & technology Vol. 17; no. 11; pp. 953 - 957 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics and IOP Publishing
01.11.2015
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Subjects | |
Online Access | Get full text |
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Summary: | Although single-pulse lasers are often used in traditional laser-induced breakdown spectroscopy (LIBS) measurements, their measurement outcomes are generally undesirable because of the low sensitivity of carbon in iron-based alloys. In this article, a double-pulse laser was applied to improve the signal intensity of carbon. Both the inter-pulse delay and the combination of laser wavelengths in double-pulse laser-induced breakdown spectroscopy (DP-LIBS) were optimized in our experiment. At the optimized inter-pulse delay, the combination of a first laser of 532 nm and a second laser of 1,064 nm achieved the highest signal enhancement. The properties of the target also played a role in determining the mass ablation enhancement in DP-LIBS configuration. |
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ISSN: | 1009-0630 |
DOI: | 10.1088/1009-0630/17/11/12 |