| Original Articles |
|
|
|
|
Kinetic Study on Channelling of Protons in Metallic Carbon Nanotubes |
| ZHAO Dan, SONG Yuan-Hong, WANG You-Nian |
| State Key Laboratory of Materials Modification by Beams, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 |
|
| Cite this article: |
|
ZHAO Dan, SONG Yuan-Hong, WANG You-Nian 2008 Chin. Phys. Lett. 25 2588-2591 |
|
|
|
|
Abstract Based on the kinetic model and the dielectric response theory, a theoretical model is put forward to describe the transport of protons along nanotube axes. With the introduction of electron band structure for different nanotubes like zigzag and armchair nanotubes of metallic properties, the collective excitation of electrons on the cylinders induced by the incident ions is studied, showing several distinct peaks in the curves of the energy loss function. Furthermore, the stopping power and the self-energy are calculated as functions of ion velocities, especially taking into account the influence of damping coefficients. It is conceivable from the results that, in the kinetic formulation, plasmon excitation plays a major role in the stopping. And as the damping increases, the peaks of the stopping power shift to the lower velocities, with the broadening of the plasmon resonance.
|
| Keywords:
61.85.+p
73.63.-b
73.20.Mf
|
|
|
Received: 14 March 2008
Published: 26 June 2008
|
|
| PACS: |
61.85.+p
|
(Channeling phenomena (blocking, energy loss, etc.) ?)
|
| |
73.63.-b
|
(Electronic transport in nanoscale materials and structures)
|
| |
73.20.Mf
|
(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
