Engineering Commons^™

Effects Of Surface Conditioning, Morphology, And Temperature On Secondary Electron Emission, Nathan D. Zameroski

Electrical and Computer Engineering ETDs

An experimental system has been set up that allows for the measurement of secondary electron yield (S.E.Y.) values as a function of time and beam energy. In these experiments, measured S.E.Y. values vs. incident electron beam energy of Poco Graphite, Titanium, and Copper varied greatly with time and energy. However, measured S.E.Y. values were still within the range of values given in the published literature.

Published values of S.E.Y. for materials of interest vary greatly from source to source. The discrepancy in this data appears to be due to various factors including the following: surface conditions, surface contamination, i.e. oxidation …