Analytic expressions for the inelastic scattering and energy loss of electron and proton beams in carbon nanotubes

Emfietzoglou, D., Kyriakou, I., Garcia-Molina, R., Abril, I. and Kostarelos, K. (2010) Analytic expressions for the inelastic scattering and energy loss of electron and proton beams in carbon nanotubes. Journal of Applied Physics, 108 (5). 054312. 10.1063/1.3463405.

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DOI: 10.1063/1.3463405

Abstract

We have determined "effective" Bethe coefficients and the mean excitation energy of stopping theory (I -value) for multiwalled carbon nanotubes (MWCNTs) and single-walled carbon nanotube (SWCNT) bundles based on a sum-rule constrained optical-data model energy loss function with improved asymptotic properties. Noticeable differences between MWCNTs, SWCNT bundles, and the three allotropes of carbon (diamond, graphite, glassy carbon) are found. By means of Bethe's asymptotic approximation, the inelastic scattering cross section, the electronic stopping power, and the average energy transfer to target electrons in a single inelastic collision, are calculated analytically for a broad range of electron and proton beam energies using realistic excitation parameters.

Item Type:Article
Departments, units and centres:Department of Pharmaceutics > Department of Pharmaceutics
ID Code:2847
Journal or Publication Title:Journal of Applied Physics
Deposited By:Library Staff
Deposited On:24 Feb 2012 12:27
Last Modified:24 Feb 2012 12:27

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