| 光谱学与光谱分析 |
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| Study of the Enhancement Effect of Copper Alloy Self-Hole Confinement on Plasma Radiation |
| XU Song-ning, JIANG Ran, NING Ri-bo, LI Qian, DUAN Wen-zhao |
| Shenyang Ligong University, Shenyang 110159, China |
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Abstract In this paper，self-hole confinement method was used to improve the quality of laser-induced breakdown spectroscopy and explore a convenient method to enhance the plasma radiation intensity. The effect of the self-hole confinement on plasma radiation intensity was investigated. Laser induced breakdown spectroscopy with Nd∶YAG laser was used to generate the plasma of HPb59-1 lead copper alloy sample in air. Grating spectrometer and ICCD were used to record plasma spectrum. The plasma radiation intensity of element Cu and Pb with holes of different diameters and depths were measured. Overall, the best signal intensity can be obtained with a confinement self-hole with 3 mm diameter and 1.5 mm depth. The spectral line intensities of elements Cu and Pb with self-hole are increased around 38.3% and 35.4% compared with the case without hole confinement;spectral signal-to-background ratio increased about 200.2% and 137.5%, respectively. The study results showed that the spectral quality of laser-induced lead copper alloy sample can be improved effectively by using the method of self-hole confinement. The method is sample and easy to operate which avoids the interference from the internal surface pollution of additional confinement setup of the experiment results.
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Received: 2015-05-04
Accepted: 2015-10-05
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Corresponding Authors:
XU Song-ning
E-mail: xsn_201309@126.com
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