摘要
A distinct optical emission from the Rh203 （Ⅱ） structural sapphire is observed under shock compression of 125, 132, and 143 GPa. The emission intensity continuously increases with the thickness of shocked sapphire. The colour temperature is determined to be about 4000 K, which is obviously smaller than the reported value of the alpha phase alumina at the pressures below 80 GPa. The present results suggest that the structural transformation will cause an obvious change of optical property in sapphire.
A distinct optical emission from the Rh203 （Ⅱ） structural sapphire is observed under shock compression of 125, 132, and 143 GPa. The emission intensity continuously increases with the thickness of shocked sapphire. The colour temperature is determined to be about 4000 K, which is obviously smaller than the reported value of the alpha phase alumina at the pressures below 80 GPa. The present results suggest that the structural transformation will cause an obvious change of optical property in sapphire.
基金
Supported by the Science Foundation of the Key Laboratory of Shock Physics and Detonation Physics of CAEP under Contract No 51478030404QT2201. The authors thank Professor Jing Fuqian for helpful discussions and Xue Xuedong and Zhang Minjian for experiment assistance.
