TIME AND SPACE EVOLUTION OF EMITTING CARBON NANOPARTICLES - CORRELATION WITH THE FORMATION OF FULLERENES AND CARBON NANOTUBES-

摘要

The temporal and spatial evolution of emitting carbon nanoparticles were investigated using a laser furnace apparatus combined with a high-speed video camera. An apparent increase in the blackbody emission intensity at DELTA t > 400 mu sec after laser vaporization of a graphite rod was clearly recognized. Also, it was found that this increasing tendency corresponds well to that of the fullerene yield, where fullerene species was obtained as sublimed carbon material using in situ sublimation method. These findings suggest that a certain exothermic process related to the formation of C_(60), other higher fullerenes, and carbon nanotubes should occur at DELTA t> 400 mu sec inside the furnace.