Externally-induced modification activated by high-energy excitation such as γ-irradiation from Co source is analyzed in chalcogenide glasses in terms of radiation-structural and glass-relaxation metastability, at the example of sulphides (including stoichiometric arsenic trisulphide, AsS) and selenides. Unified evolving conjugated (free energy in dependence on configuration coordinate) and (temperature deviations in enthalpy, configurational entropy or free volume) diagrams is proposed to describe metastability in these glasses under external influences, such as (1) physical ageing, (2) irradiation, (3) thermal annealing, (4) rejuvenation, and their combinations. The model predicts glass stabilization in the composed of partial sub-states related to (i) irradiation, (ii) rejuvenation, (iii) annealing, as well as (iv) ideal-glass deep states, connected by and transitions. This model allows an adequate parameterization of optical responses related to metastability in these glasses defined through blue (bleaching) or red (darkening) shift in their optical transmission spectra.

中文翻译：

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共价网络玻璃形成体中辐射引起的改性效应：统一构型-焓模型中的现象学描述

以硫化物（包括化学计量的三硫化二砷，AsS）和硒化物为例，对硫族化物玻璃中由高能激发（例如来自 Co 源的 γ 辐射）激活的外部诱导改性的辐射结构和玻璃弛豫亚稳定性进行了分析。提出了统一演化共轭（取决于构型坐标的自由能）和（焓、构型熵或自由体积的温度偏差）图来描述这些玻璃在外部影响下的亚稳定性，例如（1）物理老化，（2）辐射，（3）热退火，（4）回春，以及它们的组合。该模型预测玻璃稳定性由与（i）辐照、（ii）再生、（iii）退火以及（iv）理想玻璃深态相关的部分子态组成，通过 和 跃迁连接。该模型允许对与这些玻璃的亚稳定性相关的光学响应进行充分的参数化，这些玻璃通过光学透射光谱中的蓝色（漂白）或红色（变暗）偏移来定义。