Automatic Instrument for Electron Scattering Measurements

Abstract
An instrument capable of automatically recording the distribution in energy and angle of electrons scattered from solids is described. The energy range of the primary electrons is 10 to 50 kev. On a two‐second cycle the instrument obtains and records an energy loss spectrum at a fixed angle, advances in angle, and repeats. The instrument will distinguish energy peaks less than 20 volts apart at 20 kev and angular details less than 10−3 radian apart.

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