Abstract

In this paper, the design and development of a simple demountable electrostatic module for measuring Secondary Electron Emission (SEE) ratio have been given. SEE ratios of metals and thin film metal oxides have been successfully measured. The module consists of a narrow angle electron gun, which is the source of primary electron beam of wide energy range, and a cylindrical collector to collect emitted secondaries. Design procedure for the electron gun in particular and module in general have been described. Computer plots of equipotentials and electron trajectories are shown. The validity of SEE measurements using the module has been established using platinum as standard. It has been observed that the module reliably measures SEE ratios for beam voltages ranging between 100 V and 3.6 kV and with little modification its range can be extended down to voltages less than 100 V.

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