Effect of the structural state of graphite on the parameters and kinetics of transformation into diamond under shock compression |
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| Authors: | A S Savinykh G I Kanel S V Razorenov |
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| Institution: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia;(2) Institute for High Energy Densities, Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya ul. 13/19, Moscow, 125412, Russia |
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| Abstract: | The parameters of the transformation into diamond or a diamond-like high-pressure phase under shock compression were measured for a pressed natural OSCh-T1 grade graphite, a highly oriented monochromator-grade graphite, and a UPV-1 pyrolitic carbon. In the experiments, the compression-wave structure was measured in the transformation region using a VISAR laser Doppler velocimeter. It was found that the transformation pressure increases and the transformation rate decreases as the degree of three-dimensional ordering of graphite decreases. |
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