In this paper, we present the findings of research on absorption spectra, reflection spectra, and luminescence spectra for a new decorative stone-rayizite, which is a mixture of antigorite, dolomite, and a small amount of talc. This stone exhibits the alexandrite effect, and the color is due to chromian antigorite. The Y and U bands in the absorption spectra and the R line at 686.6 nm in the luminescence spectra indicate that Cr3+ ions are present. The emission spectrum also includes the emission of Fe2+ ions at wavelength 615 nm. The band at 650 nm, which becomes active under the action of a pulsed electron beam and does not occur during photoexcitation, is a distinguishing feature. This band belongs to a center associated with emission fromnonbridging oxygen. In this paper, we discuss the mechanism for the formation of such luminescence centers. (C) 2021 Optica Publishing Group
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机译:本文介绍了一种新的装饰石射线石的吸收光谱、反射光谱和发光光谱的研究结果,该石射线石是反长石、白云石和少量滑石的混合物。这块石头表现出亚历山大变石效果,颜色是由于铬反长石。吸收光谱中的 Y 和 U 波段以及发光光谱中 686.6 nm 处的 R 线表明存在 Cr3+ 离子。发射光谱还包括波长为 615 nm 的 Fe2+ 离子的发射。650 nm 处的波段在脉冲电子束的作用下变得活跃,并且在光激发过程中不会发生,这是一个显着特征。该波段属于与非桥接氧发射相关的中心。在本文中,我们讨论了这种发光中心的形成机理。(C) 2021 Optica 出版集团
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