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Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2007

Transformation of graphite into nanodiamond following extreme electronic excitations

Abstract

Graphite targets have been irradiated at 90 K and 300 K with 850 MeV and 6 GeV lead ions and with 20–30 MeV fullerene cluster ions in a large range of fluences. Damage creation was studied both by transmission electron microscopy and Raman spectroscopy. The very strong energy density deposited in electronic processes generates a highly excited region around the projectile path. The relaxation of the deposited energy via hydrodynamic expansion and shock-wave propagation leads to the formation of small defective graphitic domains and of nanocrystalline diamond particles.
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in2p3-00220520 , version 1 (28-01-2008)

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A. Dunlop, G. Jaskierowicz, P. M. Ossi, S. Della Negra. Transformation of graphite into nanodiamond following extreme electronic excitations. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2007, 76, pp.155403. ⟨10.1103/PhysRevB.76.155403⟩. ⟨in2p3-00220520⟩
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