对PbF2晶体在生长过程中的失透以及晶体在加工和储运过程中发生的失透现象进行了研究,认为晶体在生长过程中的失透是由于晶体生长时氧进入PbF2晶格中由八个氟原子所构成的六面体的中心位置,而晶体在加工和储运过程中的失透则是由于接触了水造成晶体表面部分PbF2由立方相转变为斜方相小晶粒所致．
The transmission loss of PbF2 crystals, happened in their growth process and in the period of machining, storing and carrying, was investigated. The results show that the transmission loss in the growth process happens when oxygen atoms occupy the center of the PbF2 crystal lattice and the transmission loss happens in the period of machining, storing and carrying when β→α phase transition occurs on the surfaces of the crystals after they contact with water.
参考文献
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