Electron ejection from single crystals due to 1- to 10-keV noble-gas ion bombardment
Harrison, D.E., Jr.
MetadataShow full item record
The secondary-electron ejection coeKcient y has been measured for the (110), (100), and (111)planes of Cu, Al, Ag, Ni, and Mo bombarded by the singly charged noble-gas ions Ne+, Ar+, Kr+, and Xe+ in the energy range from 1 to 10 keV. Surfaces were kept clean to within a fraction of a monolayer contamination by the sputtering action of the incident ion beams. The ratios ys&t/ys'q, 't' are quite constant, which would tend to indicate a theoretical model based on simple geometrical considerations of the opacity of the single crystal planes. However, the fact that the ratios are relatively insensitive to the ion-bombardment energy indicates that a model based upon the transparency of the target is not sufficient to explain the phenomenon. The dependence of y on the bombarding-ion mass is also explored.