论文标题
金属氢：实验亚亮相
Metallic Hydrogen: Experiments on Metastability
论文作者
论文摘要
在5至83 K之间，在钻石砧块中加压分子氢。在足够高的压力下，估计在477至491 GPa之间，氢成为金属，取决于其在近红外的反射率，并适合Drude-ElectRectron模型。然后，我们研究了金属氢的预测能力。在5 K的温度下，金属氢上的负载逐步降低，直到压力为零。在调低负载或压力时，样品显然转化为分子相并逃脱。样品孔关闭。我们估计这种压力为113至84 GPA。在零压力下未观察到金属氢是可稳定的。
Molecular hydrogen was pressurized in a diamond anvil cell at temperatures between 5 and 83 K. At a sufficiently high pressure, estimated to be between 477 to 491 GPa, hydrogen became metallic, determined by its reflectance in the near infrared and fit to a Drude free-electron model. We then studied the predicted metastability of metallic hydrogen. At a temperature of 5 K the load on the metallic hydrogen was stepwise reduced until the pressure was zero. While turning the load or pressure down, the sample evidently transformed to the molecular phase and escaped; the sample hole closed. We estimate this pressure to be 113 to 84 GPa. Metallic hydrogen was not observed to be metastable at zero pressure.
