状态参量相关性对实验数据不确定度的影响
Influence of pertinence of physical parameters on uncertainty of experimental data
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摘要: 主要讨论了激光状态方程实验测量中，标准材料冲击波速度和粒子速度的线性关系式中物理量的相关性对待测材料粒子速度的影响，以及待测量材料冲击波速度和粒子速度的函数相关性对待测材料压强不确定度的影响。通过激光状态方程实验数据实例计算,定量地给出了它们对实验精度的影响。经多发次实验数据统计表明：标准材料冲击绝热参数的相关性对待测材料粒子速度相对不确定度的变化小于0.7‰，待测材料冲击波速度和粒子速度的相关性对待测材料压强相对不确定度的变化在0.5%左右。Abstract: This paper discussed the influence of the pertinence of two couples of physical parameters on the uncertainty of particle velocity and the shock pressure of test sample. The influence was estimated from calculation of experimental data. By a great deal of experimental statistic data, the influence of the pertinence of Hugoniot parameters on the uncertainty of particle velocity was less than 0.7‰, and the influence of the pertinence of physical parameters shock velocity and particle velocity on the uncertainty of shock pressure was about 0.5% .
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Key words:
- laser equation of state /
- pertinence /
- impedance-match /
- shock wave
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