Chinese Optics Letters, Volume. 9, Issue 8, 083001(2011)
Optical absorption spectra of tourmaline crystals from Altay, China
Tourmaline is an important functional and gem material. The current study examines pink, green, and brownish-green tourmalines from Altay deposit. Based on X-ray fluorescence (XRF) quantitative analyses and ultrariolet-visible-near-infrared (UV-VIS-NIR) spectral analyses in combination with annealing experiments, the color center of tourmaline is found to be related to the d-d transitions of ions or the d-d transitions of exchange coupled ions. Annealing treatment affects the color improvement of tourmaline crystals.
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Xueliang Liu, Xiqi Feng, Jianliang Fan, Shouguo Guo. Optical absorption spectra of tourmaline crystals from Altay, China[J]. Chinese Optics Letters, 2011, 9(8): 083001
Category: Spectroscopy
Received: Feb. 17, 2011
Accepted: Mar. 15, 2011
Published Online: Jun. 22, 2011
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