skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge

Abstract

Thermal and diffusion properties of hot gas around a dc arc discharge under a gravity-free condition are investigated using a jet plane in order to improve the arc production of carbon clusters. Spherically symmetric temperature distribution of He gas around the arc plasma and monotonic slow expansion of the high-temperature region are observed. By means of the passive-type Mie scattering method, random slow diffusion of carbon clusters around the arc plasma is clearly observed under the gravity-free condition. This indicates that carbon clusters including single-walled carbon nanotubes are synthesized around the arc plasma where the He temperature is higher than 1000 K. It is confirmed that large bundles of fatter single-walled carbon nanotubes are produced under the gravity-free condition.

Authors:
;  [1];  [2]
  1. Department of Physics, Shizuoka University, Ooya, Suruga-ku, Shizuoka 422-8529 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
20795814
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 99; Journal Issue: 10; Other Information: DOI: 10.1063/1.2194122; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; CARBON; DEPOSITION; ELECTRIC ARCS; HELIUM; ION TEMPERATURE; NANOTUBES; PLASMA; PLASMA DIAGNOSTICS; RANDOMNESS; SCATTERING; TEMPERATURE DEPENDENCE; TEMPERATURE DISTRIBUTION; TEMPERATURE RANGE 1000-4000 K; THERMODYNAMICS

Citation Formats

Mieno, T., Takeguchi, M., and National Institute for Material Science, Sakura, Tsukuba 305-0003. Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge. United States: N. p., 2006. Web. doi:10.1063/1.2194122.
Mieno, T., Takeguchi, M., & National Institute for Material Science, Sakura, Tsukuba 305-0003. Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge. United States. doi:10.1063/1.2194122.
Mieno, T., Takeguchi, M., and National Institute for Material Science, Sakura, Tsukuba 305-0003. Mon . "Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge". United States. doi:10.1063/1.2194122.
@article{osti_20795814,
title = {Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge},
author = {Mieno, T. and Takeguchi, M. and National Institute for Material Science, Sakura, Tsukuba 305-0003},
abstractNote = {Thermal and diffusion properties of hot gas around a dc arc discharge under a gravity-free condition are investigated using a jet plane in order to improve the arc production of carbon clusters. Spherically symmetric temperature distribution of He gas around the arc plasma and monotonic slow expansion of the high-temperature region are observed. By means of the passive-type Mie scattering method, random slow diffusion of carbon clusters around the arc plasma is clearly observed under the gravity-free condition. This indicates that carbon clusters including single-walled carbon nanotubes are synthesized around the arc plasma where the He temperature is higher than 1000 K. It is confirmed that large bundles of fatter single-walled carbon nanotubes are produced under the gravity-free condition.},
doi = {10.1063/1.2194122},
journal = {Journal of Applied Physics},
number = 10,
volume = 99,
place = {United States},
year = {Mon May 15 00:00:00 EDT 2006},
month = {Mon May 15 00:00:00 EDT 2006}
}