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美国康乃尔大学鲁奥夫(A.L.Ruoff)教授所领导的高压实验室,为了开展金属氢和金属NH_4等的研究,近几年来,进行了大量的实验和高压技术的探索研究. 1978年,鲁奥夫和奈尔逊(D.A.Nelson)第一次观测到了固体氙转变成金属氙. 他们采用的高压装置是对顶压砧型容器.上压砧是具有半径为R的球面顶尖的金刚石(与硬度计的金刚石压头的形状相似),R=39和100微米,下压砧为金刚石平面压砧.实验时,整个装置放在一个真空室里,用液氦进行冷却,使压
In the recent years, a large number of experiments and high-pressure technology research and exploration have been carried out in order to carry out the research on metal hydrogen and metal NH_4 in the high-pressure laboratory under the leadership of Professor ALRuoff from Cornell University. For the first time, Auf and Nelson (1992) observed the conversion of solid xenon to metal xenon using the high pressure device as a top-pressing anvil container.The upper anvil was a diamond with a spherical top radius R Hardness of diamond indenter shape similar), R = 39 and 100 microns, under the anvil for the diamond plane anvil .In experiment, the entire device on a vacuum chamber, with liquid helium cooling, the pressure