Rotational excitations of methane molecules in carbon nanotubes

Authors
Bienfait, M Asmussen, B Zeppenfeld, P Press, W Palmari, JP Johnson, M Journet, C Bernier, P Metenier, K Bonnamy, S Dupont-Pavlowski, N
Citation
M. Bienfait et al., Rotational excitations of methane molecules in carbon nanotubes, PHYSICA B, 301(3-4), 2001, pp. 292-294
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
301
Issue
3-4
Year of publication
2001
Pages
292 - 294
Database
ISI
SICI code
0921-4526(200108)301:3-4<292:REOMMI>2.0.ZU;2-J
Abstract
Rotational tunneling of CH4 molecules in single wall and multiwall carbon n anotubes has been studied at low temperature by inelastic neutron scatterin g. Neutron measurements for several uptakes of CH4 show broad distributions of rotational energies. A simple model which is based on a Gaussian distri bution of local potentials was applied to the data. The obtained values are similar to values found for methane molecules in the mesopores of various SiO2 modifications. (C) 2001 Elsevier Science B.V. All rights reserved.