本文报道了对NaF:Mg~(2+)晶体中(F_2~+)~*心进行的实验研究,实验中观察到在F_2~+心和(F_2~+)~*心之间存在着一个转型的过程.其转型的速率与掺杂的二价金属种类有关,而当掺杂浓度不太低时同掺杂的浓度无关.实验还发现(F_2~+)~*心的热漂白产物同Z_4心有相同的性质.根据实验结果本文提出了(F_2~+)~*心是由一个F_2~+心同一个杂质-空穴对联接而成的可能模型.

Experimental study on (F2+)* centers in NaF:Mg2+ crystals is reported in this paper. A process of type transfer from F2+ to (F26+)* centers was observed in our ex Periment. The rate of transfer depends on the type of doped divalent metal ions rather than the concentration of doped cations. It was also found that the products of thermal bleaching of the(F2+)* centers exhibit the same properties as that of Z4 centers. From the results of experiments we propose a possible model that the (F2+)* center is formed of a F2+ center connected to an I-V pair.