块状密实铁/蓝宝石界面的冲击温度测量  

Temperature Measurement for the Interface of the Dense Bulk-Iron/Sapphire Window under Shock Compression

作　　者：郭锦良[1] 刘福生[1] 郝高宇[1] 张明建[1] 张岱宇[1] 薛学东[1] 

机构地区：[1]西南交通大学高温高压物理实验室,四川成都610031

出　　处：《高压物理学报》2008年第4期414-418,共5页Chinese Journal of High Pressure Physics

基　　金：自然科学基金(10874141)

摘　　要：利用二级轻气炮技术并结合对称碰撞方法对铁样品进行了冲击加载,通过测量铁/蓝宝石的界面光谱辐射亮度获得该界面的冲击温度。实验中,采用了新的样品/窗口界面制备途径和更加可靠的高温计标定方法,有效地消除了直接接触界面的"尖峰"辐射现象,观测到了Fe/Al2O3接触界面的稳定辐射。实验结果表明,在164 GPa冲击压力下,Fe/Al2O3的界面温度为(3 950±180)K。The iron sample is symmetrically impacted by a high speed flyer of the same material, which is launched by use of two-stage light-gas gun. The temperature of the interface between iron and sapphire is determined by measuring the spectra illuminaton. In experiment, a new technique is applied to prepare the bulk-iron/sapphire interface,and an improved in-situ method is used to calibrate the pyrometer. As a result, the ＂peak radiation＂ from the directly contacted interface is effectively diminished, and the stable emission from the ideally intaeted interface of Fe/Al2 O3 is observed. The result shows that the Fe/Al2O3 interface temperature corresponding to the shock pressure of 164 GPa is （3 950±180）K.

关 键 词：铁 冲击测温 蓝宝石 辐射 

分 类 号：O521.3[理学—高压高温物理]