Enhanced ablation of small graphite anodes for arc production of carbon nanotubes
Y. Raitses, A. Fetterman, M. Keidar
Princeton Plasma Physics Laboratory, US
graphite, nanotube, arc, electrode, ablation, sheath
The ablation rate of a graphite anode is investigated as a function of anode diameter for a carbon nanotube arc plasma. It is found that anomalously high ablation occurs for small anode diameters. This result is explained by the formation of a positive anode sheath. The increased ablation rate due to this positive anode sheath could imply greater production rate for carbon nanotubes.
Nanotech 2008 Conference Program Abstract