Contrast preserved by elastic and quasi-elastic scattering of fast electrons near bragg beams

Autor: Cundy, S. L., Metherell, A. J. F., Whelan, M. J.
Zdroj: Philosophical Magazine; March 1967, Vol. 15 Issue: 135 p623-630, 8p
Abstrakt: Experiments are reported which show that contrast effects in electron microscope images are preserved by electrons which have been scattered elastically or quasi-elastically (i.e. energy loss ≤1·5 ev) near Bragg beams. It is uncertain whether phonon scattering is entirely responsible for the contrast observed. Scattering from amorphous oxide or contamination layers on the surfaces of the specimen can produce contrast effects similar to those observed. Calculations supporting this point of view are reported.
Databáze: Supplemental Index