Bradley D K, Eggert J H, Smith R F, Prisbrey S T, Hicks D G, Braun D G, Biener J, Hamza A V, Rudd R E, Collins G W
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
Phys Rev Lett. 2009 Feb 20;102(7):075503. doi: 10.1103/PhysRevLett.102.075503. Epub 2009 Feb 18.
A new compression technique, which enables the study of solids into the TPa regime, is described and used to ramp (or quasi-isentropically) compress diamond to a peak pressure of 1400 GPa. Diamond stress versus density data are reported to 800 GPa and suggest that the diamond phase is stable and has significant material strength up to at least this stress level. Data presented here are the highest ramp compression pressures by more than a factor of 5 and the highest-pressure solid equation-of-state data ever reported.
一种新的压缩技术被描述出来，该技术能够将固体研究推进到太帕斯卡（TPa）压力范围，并被用于斜坡式（或准等熵）压缩金刚石至1400吉帕斯卡的峰值压力。报道了金刚石在800吉帕斯卡压力下的应力与密度数据，这些数据表明金刚石相是稳定的，并且至少在该应力水平下具有显著的材料强度。此处给出的数据所达到的斜坡压缩压力比以往高出5倍多，是有史以来报道的最高压力下的固体状态方程数据。
