首先让我们简略说明一下碘化钠燐光体的一些基本特性。 碘化钠(NaI)晶体是属于立方晶系,是离子型的点阵,它的晶格常数为6.46A.碘化钠之间的相互作用主要是静电性的。其晶体结构如图1。 纯碘化钠除发射可见的荧光外,光谱中还有相当多的紫外光成分,见图2.最常用的激活剂是Tl,其它能进入它的晶格中的重金属是Cu和Ni。 First let us briefly explain some of the basic characteristics of sodium iodide calender. Sodium iodide (NaI) crystal belongs to the cubic system, is an ionic lattice, its lattice constant is 6.46 A. The interaction between sodium iodide is mainly electrostatic. The crystal structure shown in Figure 1. Pure sodium iodide in addition to the visible fluorescence emission, the spectrum there is a considerable amount of ultraviolet light components, shown in Figure 2. The most commonly used activator is Tl, the other can enter its lattice of heavy metals are Cu and Ni.