抄録
We synthesized diamond from a graphite source in terrestrial and high gravity experiments. Diamond was deposited on silicon substrates. These deposits were characterized by scanning electron microscopy and Raman spectroscopy. The completely closed reaction chamber, which designed and manufactured at Teikyo University of Scienece and Technology, is easy to install on a centrifuge. We successfully synthesized diamond at high gravity on a large centrifuge at Clarkson University. Compared with terrestrial experiments, high gravity significantly affected the particle size and coverage. Under our experimental conditions, the crystal growth rate was increased at high gravity. This new reaction chamber is also very suitable for space experiments. Even with the limited volume and electric power available in spacecraft, we can install many of our chambers.
