Presentation details
» Changes in glass irradiated with an electron beam
Presentation duration: 20 minutes
Presenter: Ondrej Gedeon
Silicate glasses of various composition, mostly model binary and ternary ones, were irradiated with medium- (1-50 keV) and high-energy (2.5 MeV) electrons. Changes both in bulk and on the surface of the irradiated samples are described in terms of composition, surface roughness, and volume dilatation. While small electron dose causes volume contraction, large dose can cause volume expansion, namely in dependence on glass composition. Alkali glasses can reveal escape of alkali ions from the surface, again in dependence on the dose and initial composition of glass. Increase of roughness with electron dose is also observed.
Authors:- Ondrej Gedeon
- Karel Jurek
- Ivo Drbohlav
- Josef Zemek