摘要
利用二级轻气炮作冲击加载手段，采用自己建立的低温靶，比较系统地研究了液态ＣＯ２的冲击压缩行为。在２０～６０ＧＰａ压力区获得六个新的Ｈｕｇｏｎｉｏｔ数据点。根据这些实验点，采用液体统计力学理论和化学平衡方法，重新优化获得一组ＣＯ２－ＣＯ２，ＣＯ２－Ｏ，ＣＯ－Ｏ作用势参数。分析表明，引起体系在２５ＧＰａ以上区域冲击软化现象的主要机制是ＣＯ２离解反应，ＣＯ２—→ＣＯ＋Ｏ。
In this work the shock compression behavior of liquid CO2 is investigated using the twostage lightgas gun and the cryogenic target established by ourselves.Six new Hugoniot data ranging from 20～60GPa are obtained.On the basis of these data points,the parameters in the effective potentials of CO2CO2 and CO2O are redetermined according to a statistical mechanics theory including chemical equilibrium.The significant mechanism which causes the pV softening phenomena above 25GPa is theoretically confirmed to be CO2—→CO+O.
出处
《高压物理学报》
CAS
CSCD
北大核心
1998年第1期28-33,共6页
Chinese Journal of High Pressure Physics
基金
中物院流体物理研究所冲击波物理与爆轰物理实验室基金
