16 April 2018 Identification of natural and synthetic diamonds by cathodoluminescence spectra
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Proceedings Volume 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII; 106140Y (2018) https://doi.org/10.1117/12.2302979
Event: XIII International Conference on Atomic and Molecular Pulsed Lasers, 2017, Tomsk, Russia
Abstract
The cathodoluminescence spectra of nine diamond samples at temperatures of 82-295 K were investigated. According to the presence of the N3a vibronic system with the zero-phonon line at 2.68 eV in the luminescence spectra, six samples were identified as natural. By the presence in the luminescence spectra of the 2.56-eV vibronic system and the unstructured band at 2.54 eV, associated with nickel, two samples were identified as synthetic, grown at high pressure and high temperature. Due to exciton luminescence at 5.271 eV and the absence of any spectral features of impurity nature, one sample was identified as synthetic, grown by the chemical vapor deposition. Based on the data obtained, the technique for identifying of natural and synthetic diamonds has been proposed.
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E. I. Lipatov, E. I. Lipatov, A. G. Burachenko, A. G. Burachenko, S. M. Avdeev, S. M. Avdeev, V. F. Tarasenko, V. F. Tarasenko, M. A. Bublik, M. A. Bublik, } "Identification of natural and synthetic diamonds by cathodoluminescence spectra", Proc. SPIE 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII, 106140Y (16 April 2018); doi: 10.1117/12.2302979; https://doi.org/10.1117/12.2302979
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