冲击压缩过程中透明晶体的发光现象与材料的微观损伤及其结构变化密切相关,利用轻气炮加载结合多通道辐射高温计以及ICCD瞬态光谱测量系统,在400~800 nm的可见光波段获得了蓝宝石晶体的发光光谱;研究表明蓝宝石的冲击发光呈典型的热辐射特征,其热辐射温度与该压力下蓝宝石的熔化温度之间存在明显的关联性。最后,结合辐射温度和光谱分布形态研究了蓝宝石剪切带发光的机理。

Transparent crystal luminescence at impact loading is closely related to its microscopic damage and structure change. The multichannel radiation pyrometer with light-gas gun and spontaneous spectroscopic system are combined to study the light emission of shocked sapphire. The light spectrum of sapphire range is obtained in 400-800 nm wavelength. The spectral distribution exhibits typical thermal radiation characteristics. The radiation temperature is in agreement with the corresponding melting temperature. The mechanism of the luminescence of the sapphire shear band is studied in combination with the radiation temperature and the spectral distribution.