黄玉的光谱研究

The Spectroscopic Study of Topaz

首次采用傅里叶变换红外光谱仪 (FTIR)及镜面反射附件 ,对天然宝石材料———黄玉在反应堆辐照致色 (成为蓝色 )前后的样品进行了近、中红外区的光谱分析 ,并使用FT Raman光谱进行补充。对黄玉结构中 SiO 基团的振动谱图结合群论分析结果进行了归属 ,对不同颜色的样品谱图进行了对比 ,发现了许多明显的变化并分析了原因 ,部分变化的原因有待于进一步研究。用紫外 /可见光谱初步分析了辐照致色的机理。

In this paper,the natural gem material——Topaz (colorless transparent samples and reactor irradiation induced blue color samples) was studied on the spectroscopic analysis of Fourier transformation infrared spectrum (FTIR) and FT Raman spectrum.The structure of topaz consists of OH groups and SiO 4 groups.Si O vibration spectrum was characterized with the group theoretical analysis.OH stretching modes of vibration showed many changes among the different color samples,the reason of the changes was explained.The color origin was preliminery investigated by ultra violet and visible absorption spectrum.