摘要
利用液氮制冷技术制取液氮样品 ,以二级轻气炮为加载工具 ,对液氮样品进行平面冲击压缩 ,实验测量了液氮 10～ 6 0GPa一次冲击Hugoniot数据。实验结果显示 ,33GPa以上氮的冲击波速度 -粒子速度关系式与低压段有明显差别 ,表现为氮的压缩系数增大。经理论计算和分析 ,可以认为液氮在冲击压力 33GPa以上 ,液氮体系会发生分子离解相变。
Shock compression properties were measured for liquid nitrogen compressed dynamically to pressure of 10～60GPa by employing the two stage light gas gun. The data show a continuous phase transition above 33GPa shock pressure, as indicated previously by shock wave experiments. A theoretical model has been derived to examine experimental data by inducing molecular dissociative fraction. According to theoretical and experimental results the phase transition was considered as molecular dissociative phase transition
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2002年第4期347-352,共6页
Explosion and Shock Waves
关键词
液氮
冲击压缩
离解相变
实验原理
压缩系数
liquid nitrogen
shock compression
dissociative phase transition
