Hits:

Indexed by:期刊论文

Date of Publication:2013-05-14

Journal:JOURNAL OF APPLIED PHYSICS

Included Journals:SCIE、EI

Volume:113

Issue:18

ISSN No.:0021-8979

Abstract:For an isolated C-60 molecule, we study plasmon excitations that are induced by an external, fast moving electron, by using a two-dimensional, spherical, two-fluid hydrodynamic model for the dynamic response of the sigma and pi electrons in the carbon nanostructure. Second quantization of the linearized hydrodynamic model allows us to discuss how effective is multiple excitation of various plasmon modes. Mean numbers of the excited plasmon modes, differential cross sections, and the total energy loss of the incident electron are calculated by both a quantized model with zero damping and by a semi-classical model with phenomenological damping. Our calculated differential cross sections are compared with experiment. (C) 2013 AIP Publishing LLC.