【摘要】 用二级轻气炮作为加载工具,对南丹铁陨石进行了冲击压缩线测量,压力范围为62-208GPa。用阻抗匹配法得出的南丹铁陨石冲击波速度D与粒子速度u之间的关系为 D=3.884+1.840u-0.12267u~2(km/s)还据此确定了考虑到晶格非谐振项贡献的南丹铁陨石的三项式Gr?neisen 状态方程更多还原

【Abstract】 The shock udiabatics of Nandan iron meteorite was measured by using impedance-match method and a two-stage light-gas gun as its loading tool. Pressure ranges are from 62GPa to 208 GPa. The shock velocity D versus particle velocity u can be expressedD=3.884+1.840u-0. 12267u2(km/s)With the assumptions of Born-Meyer potantial suitable interatomic potantial and the thermal contributions necessitating inclusions of non-harmonic vibration term and free-electron term, the equation-of-stale of Nandan iron meteorite is also deduced in this paper.更多还原