掺杂人工刚玉的透射光谱和辐照效应

Transmission Spectra and Radiation Effect for Doped Synthetic Corundum

以UV-365型分光光度计测量单掺或多掺过渡金属Fe、Ti、Cr、Ni、V、Co等20个人工刚玉样品的透射光谱。给出着色离子在刚玉中调色和补色的试验结果。着色离子在刚玉中透射光谱可通过分散离子的电子跃迁或不同价态间电荷传输来解释。掺有Fe或Ni合成刚玉经γ辐照后变为黄色,其辐照效应通过黄色的蓝宝石色心理论加以解释。

Transmission spectra of 20 samples of synthetic corundum do-ped singly or multiply with transition metals Fe, Ti, Cr, Ni, V, Co were me-asured with a UV-365 spectrophotometer. The experimental results of mixingcolour and complementary colour for coloration ions in corundum were alsogiven. The transmission spectra of the coloration ions in corundum can beexplained by the electron transition of dispersed metal ions or by the interva-lence charge transfer. The colour of synthetic corundum doped with Fe or Nichanged into yellow after γ-radiation, and the radiation effect is explainedby the color center theory applied to yellow sapphires.