Formation of Diamond by Explosive Shock

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Science  09 Jun 1961:
Vol. 133, Issue 3467, pp. 1821-1822
DOI: 10.1126/science.133.3467.1821

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Samples of graphite have been recovered after exposure to explosive shocks of 300,000-atm estimated intensity. X-ray and electron-diffraction examinations prove the existence of diamond in this material. The mechanism proposed for the formation of diamond under these conditions is simple compression in the c-axis direction of the rhombohedral form of graphite.