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Parvin P, Masoodirad M, Bavali A, Daneshafrooz V, Aghaei P. Identification of precious natural crystals using laser induced fluorescence technique. ICOP & ICPET _ INPC _ ICOFS 2014; 20 :305-308
URL: http://opsi.ir/article-1-165-en.html
URL: http://opsi.ir/article-1-165-en.html
1- Amirkabir university of technology
2- Science Department, Islamic Azad University, Central Branch, Tehran, Iran
2- Science Department, Islamic Azad University, Central Branch, Tehran, Iran
Abstract: (12012 Views)
In this study, using laser induced fluorescence technique, the fluorescence spectrum of crystalline natural stones such as emeralds, rubies and Amethyst has been investigated. Third harmonic of Nd: YAG laser at the wavelength of 532 nm and 405 nm blue diode is used to excite the stones. Our results indicate that the fluorescence spectra of different crystals are distinguishable from each other as well as natural crystals from the artificial ones.
Keywords: Precious crystals, Laser Induced Fluorescene
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