【摘要】 BeAl₆O₁₀:Cr的荧光谱由宽带和七条窄线组成.在室温下,宽带和窄线发光的衰减时间极不相同.本文根据线强度的温度关系、浓度关系推论,三条窄而强的荧光线来自两种单体铬中心.另有两条稍宽的线来自铬离子对中心.宽带发射与这些窄线发射没有象BeAl₂O₄:Cr中那样的联系.更多还原

【Abstract】 The fluorescence spectrum of BeAl6O10:Cr crystal consists of seven narrow lines and a broad b and. The difference between the lifetimes of the broad band and the lines is very big even at room temperature. There is less relationship between the band emission and the line emissions in BeAlGO10:Cr, unlike in BeAl2O4:Cr.To identify the Cr centers, experimental study has been carried out. Based on the temperature-and the concentration dependence of the line intensities, we suggest that three mainlines result from two types of single Cr centers, and other two lines come from Cr pairs centers.更多还原