本文从实验上探讨了LiF晶体中F2~+心的产生过程,证明用辐照剂量与辐照时间这两个参量作为辐照条件是恰当的,比只用一个辐照剂量参量更能清楚地说明F2~+心产生的过程。实验发现,F2~+心存在一个极值密度,它与辐照源及晶体内在因素有关,理论计算证明了这一点,并给出了极值密度的表达式:N(max)=krτ。从残余荧光现象出发,提出了F2~+心具有自由态与束缚态。并测定了国产LiF晶体中F2~+心的寿命与荧光光谱.

The generation of F+2-centers in LiF crystals is studied. Experiments show that in order to acquire a better understanding of the physical processes involved, two parameters, dosage-rate r and irradiation-time t rather than a single one, dosage R should be used to specify the irradiation condition. The density in the order of 1016 F+2-centers per cubic centimeter is obtained in our experiments. The density of F+2-centers depends on both the radiation source and the quality of the crystals. An expression derived from the experiments for maximum density is given by Nmax = krT. In addition) judging from the residual fluorescence of F^-oen fcers in LiF crystals， it seems reasonable io assume that two states of F2-centers exist in LiF crystals. The life-iime of F^-centers is also measured.