Abstract
For determination of the transmission function of a hemispherical energy analyser of an ADES 400 photoelectron spectrometer (V. G. Sci.) a direct method is used. This method is based on the definition of the transmission coefficient of an energy analyser. The number of impinging electrons from an electron gun is measured by a Faraday cup and the current of passed electrons is determined as a peak area of the current signal from the channel multiplier which is used as the Faraday cup. The transmission function of the energy analyser of the ADES 400 photoelectron spectrometer is measured for four values of the analyser pass energy.
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