New techniques are advancing the frontier of high-pressure physics beyond 1 terapascal, leading to new discoveries and offering stringent tests for condensed-matter theory and advanced numerical methods. However, the ability to absolutely determine the pressure state remains challenging, and well-calibrated pressure-density reference materials are required. We conducted shockless dynamic compression experiments at the National Ignition Facility and the Z machine to obtain quasi-absolute, high-precision, pressure-density equation-of-state data for gold and platinum. We derived two experimentally constrained pressure standards to terapascal conditions. Establishing accurate experimental determinations of extreme pressure will facilitate better connections between experiments and theory, paving the way toward improving our understanding of material response to these extreme conditions.

新技术正在将高压物理学的前沿推进到 1 万亿帕斯卡以上，从而带来新的发现，并为凝聚态理论和先进的数值方法提供严格的测试。然而，绝对确定压力状态的能力仍然具有挑战性，并且需要经过良好校准的压力密度参考材料。我们在国家点火装置和 Z 机上进行了无冲击动态压缩实验，以获得金和铂的准绝对、高精度、压力-密度状态方程数据。我们推导出了两个实验约束压力标准到 terpascal 条件。建立精确的极压实验测定将促进实验与理论之间更好的联系，