Secondary electron emission from monocrystalline metal and alkali-halide crystals
Allen, Kristin Lloyd
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This thesis is a computer simulation of secondary electron emission (SEE) from monocrystalline metals and alkali-halides using a modified version of the Harrison, Carlston and Magnuson single collision theory of SEE. Three cases of SEE are investi gated: the angular dependence of SEE from Cu bombarded by Ar , the dependence of SEE as a function of energy for rare gas ions normally incident on the (100) , (110) and (111) faces of metal single crystals, and the dependence of SEE as a function of energy for Ar and Ne ions normally incident on the (100) , (110) and (111) faces of KC1. The theory does not accurately describe the angular dependence of SEE for monocrystalline Cu targets, but does accurately predict the modified sec 6 dependence found experimentally in polycrystalline studies. For the metal targets, the difference between the theoretical kinetic secondary emission result and the experimental datum is identified as potential secondary emission. The alkalihalide SEE simulation agrees reasonably well with experiment.
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