| Título: | Analytic expressions for the inelastic scattering and energy loss of electron and proton beams in carbon nanotubes |
| Autores: |
Emfietzoglou, Dimitris Kyriakou, Ioanna García Molina, Rafael Abril Sánchez, Isabel Kostarelos, Kostas |
| Fecha: |
2012-11-29 2012-11-29 2010-09-03 |
| Publicador: | RUA Docencia |
| Fuente: |
 |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Inelastic scattering Energy loss Electron Proton beams Carbon nanotubes Física Aplicada |
| Descripción: |
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. Financial support for D.E., I.K., and K.K. by the European Union FP7 ANTICARB (Grant No. HEALTH-F2-2008-201587). |
| Idioma: | Inglés |
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