Low-Temperature Effects to Improve Efficiency of Photoluminescence Separation of Diamonds during Kimberlite Ore Processing
V. A. CHANTURIA1, I. ZH. BUNIN1, G. P. DVOICHENKOVA1, O. E. KOVAL’CHUK2
1Institute of Integrated Mineral Development-IPKON, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow, 111020 Russia
2ALROSA Research and Geological Exploration Company, Chernyshevskoe shosse 16, Mirny, 678174 Russia
Keywords: алмазы, фотолюминесценция, спектроскопия, микроструктурные характеристики, оптически активные дефекты, низкие температуры, diamonds, photoluminescence, spectroscopy, microstructural characteristics, optically active defects, low temperatures
Abstract
The article gives new experimental data on spectral characteristics of photoluminescence of natural diamonds extracted from deep horizons of Mir and Internatsionalnaya Pipes, Republic of Sakha (Yakutia) depending on composition of basic and additional optically active structural defects in crystals and on temperature during spectrum recording, considering kinetics of luminescence. It is hypothesized on applicability of low-temperature effects to enhance efficiency of photoluminescence separation of diamond crystals.
|
