Abstract

The absorption spectra have been measured at temperatures of 7.2–300 K of a \(\gamma \)-irradiated and UV-exposed LiF crystal with an admixture of oxygen and hydroxyl. The coupling force (S) with the phonons of the lattice of the electronic–vibrational transition with the zero-phonon line 436.55 nm is determined from the ratio of the intensities of the zero-phonon line and the vibronic absorption band. Based on the value of S, the nature of the color center responsible for the absorption band of 390 nm and radiation of 490 nm is proposed.

中文翻译：

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LiF–O，OH晶体中零中心线436.55 nm的色心与电子中心的相互作用

摘要

吸收光谱是在7.2-300 K的（γ）辐照且暴露于紫外线的LiF晶体与氧气和羟基的混合物下测得的。零声子线436.55 nm与电子-振动跃迁的晶格的声子的耦合力（S）由零声子线的强度与振动吸收带的比值确定。基于S的值，提出了色心的性质，该色心负责390 nm的吸收带和490 nm的辐射。