Abstract
A two-dimensional, multi-angle energy analyzer for photoemission spectroscopy has been developed which consists of an ellipsoidal mirror low pass filter, a retarding field high pass filter, CEMA plates as an area detector and a rapid image processing system for data acquisition. With this analyzer, angular distribution pictures within a cone of 88° at a fixed energy ( ΔE=0.28 eV resolution) can be taken with an angular resolution of δθ=±1.5° and a signal-to-noise ratio of 50–100 in a time of 9s. First results of Ag(111) and GeS(100) are reported.
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