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美国通用电器研究与开发中心的科学家,将最古老的高压法与最新的低压化学气相沉淀法(CVD)结合起来,由甲烷制备金刚石。他们已制备出规格到1克拉,含同位素~(12)C99.9%的金刚石。这种同位素纯度的金刚
General Electric Research and Development Center scientists combine the oldest high-pressure processes with the latest low-pressure chemical vapor deposition (CVD) to make diamond from methane. They have prepared diamonds of size up to 1 carat, containing ~ 12% C99.9% isotopes. This isotopic purity of diamond