Carbon dust formation in a cold plasma from cathode sputtering

Nanoparticles are produced in argon glow plasmas where carbon is introduced by sputtering of a graphite cathode. A scaling law of growth is reported on as a function of the discharge time. Two successive stages of growth of concomitant agglomeration and carbon deposition are observed, followed by a...

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Veröffentlicht in:	Journal of nuclear materials 2009-06, Vol.390, p.140-143
Hauptverfasser:	Arnas, C., Mouberi, A., Hassouni, K., Michau, A., Lombardi, G., Bonnin, X., Bénédic, F., Pégourié, B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Controled nuclear fusion plants Energy Energy. Thermal use of fuels Exact sciences and technology Fission nuclear power plants Fuels Installations for energy generation and conversion: thermal and electrical energy Nuclear fuels
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Beschreibung
Zusammenfassung:	Nanoparticles are produced in argon glow plasmas where carbon is introduced by sputtering of a graphite cathode. A scaling law of growth is reported on as a function of the discharge time. Two successive stages of growth of concomitant agglomeration and carbon deposition are observed, followed by a final stage of growth by carbon deposition. A model of formation of molecular precursors by coagulation of neutral clusters on the one hand and of neutral-negative clusters on the other hand is presented, based on formation enthalpy and cluster geometry.
ISSN:	0022-3115 1873-4820
DOI:	10.1016/j.jnucmat.2009.01.148