摘要
Sound velocities in shock-loaded solids are not only important to determine bulk moduli of solids at high pressures, but are also crucial to inform the shock melting of solids upon loading. In this letter, we first report on shock melting of porous solids at high pressures by measuring sound velocities in the porous iron of average density 6.90 g/cm^(3) in the pressure range of 110-180 GPa. The measured sound velocity softens at pressures from 122 to 156 Gpa, which may be attributed to shock melting of the porous iron.
作者
李西军
周显明
王藩侯
刘福生
龚自正
经福谦
LI Xi-Jun;ZHOU Xian-Ming;WANG Fan-Hou;LIU Fu-Sheng;GONG Zi-Zheng;JING Fu-Qian(Fundamental Research Center,Institute of Electronic Engineering,P.O.Box 919-510,Mianyang 621900;Institute of Fluid Physics,P.O.Box 919-102,Mianyang 621900;Institute of High Pressure Physics,Southwest Jiaotong University,Chengdu 610036)
基金
Supported by the National Natural Science Foundation of China under Grant No.10032040。