Sandia National Laboratories, Albuquerque, New Mexico 87185-1195, USA.
Phys Rev Lett. 2009 Nov 27;103(22):225501. doi: 10.1103/PhysRevLett.103.225501. Epub 2009 Nov 24.
Evaluation of models and theory of high-pressure material response is largely made through comparison with shock wave data, which rely on impedance match standards. The recent use of quartz as a shock wave standard has prompted a need for improved data. We report here on measurements of the quartz Hugoniot curve from 0.1-1.6 TPa. The new data, in agreement with our ab initio calculations, reveal substantial errors in the standard and have immediate ramifications for the equations of state of deuterium, helium, and carbon at pressures relevant to giant planets and other high-energy density conditions.
评估高压材料响应的模型和理论主要是通过与依赖阻抗匹配标准的冲击波数据进行比较来实现的。最近，石英被用作冲击波标准，这促使人们需要改进数据。我们在这里报告了从 0.1-1.6 TPa 测量石英的 Hugoniot 曲线。新数据与我们的从头计算一致，表明标准中存在很大的误差，并立即对与巨行星和其他高能密度条件相关的氘、氦和碳的状态方程产生影响。
