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

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.3463405· OSTI ID:21476451
;  [1];  [2];  [3];  [4]
  1. Medical Physics Laboratory, University of Ioannina Medical School, 45110 Ioannina (Greece)
  2. Departamento de Fisica-CIOyN, Universidad de Murcia, E-30100 Murcia (Spain)
  3. Departament de Fisica Aplicada, Universitat d'Alacant, E-03080 Alacant (Spain)
  4. Nanomedicine Laboratory, Centre for Drug Delivery Research, School of Pharmacy, University of London, London WC1N 1AX (United Kingdom)
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.
OSTI ID:
21476451
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 108; ISSN JAPIAU; ISSN 0021-8979
Country of Publication:
United States
Language:
English