Eur. Phys. J. D 16, 369-372 (2001)
https://doi.org/10.1007/s100530170132

Time evolution of emission by carbon nanoparticles generated with a laser furnace technique

¹ Department of Chemistry, Tokyo Metropolitan University, Tokyo 192-0397, Japan
² Department of Physics, Tokyo Metropolitan University, Tokyo 192-0397, Japan
³ Max Planck Institut für Kemperphysik, Postfach 103980, D-69029 Heiderberg, Germany

Corresponding author: ^a suzuki-shinzo@c.metro-u.ac.jp

Received: 30 November 2000
Published online: 15 September 2001

Abstract

Time evolution of emission by carbon nanoparticles generated with a laser furnace technique was investigated with a high-speed video camera. Assuming blackbody radiation formula for small spherical particle, the internal temperature of these carbon nanoparticles was determined as a function of time delay () after laser vaporization. It was found that the internal temperature of them drastically decreased at s through collision with the surrounding rare gas inside the furnace. On the other hand, in particular laser vaporization condition where yields of C₆₀ and other higher fullerenes in the soot were found to be high, an increase in the blackbody emission intensity could be recognized for longer wavelength ( nm) at s. This finding suggests that a certain exothermic process related to the formation of C₆₀ and other higher fullerenes should occur at s inside the furnace.