兆巴高压下c向蓝宝石的冲击辐射研究  

Investigation of Shock-induced Radiation from c-cut Sapphire at Mega-bar Pressure Range

作　　者：张岱宇[1] 郝高宇[1] 张明建[1] 刘福生[1] 

机构地区：[1]西南交通大学高压物理实验室,成都610031

出　　处：《人工晶体学报》2007年第3期531-535,544,共6页Journal of Synthetic Crystals

基　　金：中国工程物理研究院预研项目(No.51478030404QT2201)

摘　　要：采用三层夹心靶结构,利用铜箔与抛光蓝宝石之间良好的接触条件,使用辐射式高温计在1.30～1.72兆巴压力范围内观测到c向蓝宝石的强冲击辐射。在1.30和1.72兆巴的冲击压力下,得到蓝宝石在0.633μm波长处的不透明系数为1.7 cm-1和5.0 cm-1。实验显示蓝宝石的冲击辐射随着冲击压力的增加而急剧增强。As a sandwiched set being utilized in pyrometry measurement, a bright emission from shocked sapphire was observed at 0.633 micron wavelength and 1.30-1.72 mega-bar pressure range. Experimental result demonstrates the intensity of sapphire＇ emission increases with pressure increasing, the value of absorption coefficient varied from 1.7cm^-1 to 5.0cm^-1 at 0. 633 micron, c-cut sapphire＇s emissioninferred temperature （about 4000K） revealed the origin of sapphire＇s emission is the shock-heated local regions which are heterogeneously distributed in shocked window. So the shock-induced emission from sapphire is a sort of unthermal equilibrium radiation.

关 键 词：冲击高压 兆巴 蓝宝石 辐射 

分 类 号：O734[理学—晶体学]