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Chin. Opt. Lett.
 Home  List of Issues    Issue 08 , Vol. 12 , 2014    10.3788/COL201412.083001

Microanalysis of silver jewellery by laser-ablation laser-induced breakdown spectroscopy with enhanced sensitivity and minimal sample ablation
Junyu Mo, Yuqi Chen, Runhua Li, Qi Zhou, Yang Lou
Department of Physics, School of Science, [South China University of Technology], Guangzhou 510641, China

Chin. Opt. Lett., 2014, 12(08): pp.083001

Keywords(OCIS Code): 300.6365  300.6210  300.6190  

Laser-ablation laser-induced breakdown spectroscopy (LA-LIBS) based on single Nd:YAG laser is used to analyze copper impurity in silver jewellery with enhanced sensitivity and minimal sample ablation. 6-30 folds signal enhancement can be achieved under the re-excitation of the breakdown laser and the spatial resolution is only determined by the ablation laser. 50 ppm limit of detection of copper is achieved when the crater diameter is 17.2 \mu m under current experimental condition. This technique gives higher analysis sensitivity under the same sample ablation in comparison with single pulse (SP) LIBS. It is useful for high sensitive element microanalysis of precious samples.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2014/7/18

Get Citation: Junyu Mo, Yuqi Chen, Runhua Li, Qi Zhou, Yang Lou, "Microanalysis of silver jewellery by laser-ablation laser-induced breakdown spectroscopy with enhanced sensitivity and minimal sample ablation," Chin. Opt. Lett. 12(08), 083001(2014)

Note: This work was financially supported by the National "973" Program of China (No. 2012CB921900), the National Natural Science Foundation of China (Nos.11274123 and 11304100), and the Basic Scientific Research Program of South China University of Technology (No. 2014ZZ0066).


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