Positron lifetime spectroscopy was used to study multi-wall carbon nanotubes. The measurements were performed in vacuum on the samples having different average diameters. The positron lifetime values depend on the nanotube diameter. The results also show an influence of the nanotube diameter on the positron annihilation intensity on the nanotube surface. The change in the annihilation probability is described and interpreted by the modified diffusion model introducing the positron escape rate from the nanotubes to their external surface.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - Jan 1 2013|
|Event||16th International Conference on Positron Annihilation, ICPA 2012 - Bristol, United Kingdom|
Duration: Aug 19 2012 → Aug 24 2012
ASJC Scopus subject areas
- Physics and Astronomy(all)