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Prof. Ray Egerton report series: 1. Radiation damage in the TEM

Date£º2015-10-13

Title: Radiation damage in the TEM

Time: 9:30 am, Firday, Oct 16th 2015

Place: Room 413, Teaching building No. 11

 

High-angle elastic scattering of primary electrons produces knock-on damage in the form of the displacement of atoms from their lattice sites within a crystalline specimen, sputtering of atoms from the surface of a specimen, and radiation-enhanced diffusion of atoms along a surface. The inelastic scattering of primaries results in ionization damage (radiolysis), which dominates over knock-on damage in beam-sensitive (e.g. organic) specimens. We will discuss how these processes depend on the TEM accelerating voltage and other parameters, and how specimen damage can be minimized.

 

Ray Egerton FRSC, Emeritus Professor of Physics, University of Alberta, Edmonton, Canada T6G 2E1.

Home page: www.tem-eels.ca

Room 3-106, National Institute for Nanotechnology: (780) 641-1668

Receiving editor, MICRON journal: http://ees.elsevier.com/jmic/