Abstract
Ion kinetic energy spectra have been ensemble averaged by interfacing a Hewlett-Packard 2100A computer with a mass-analyzed ion kinetic energy spectrometer (MIKES). Under computer control, the electric sector voltage is scanned repeatedly over a range of up to 30% of the maximum voltage. The data for each scan is automatically averaged and this average may be plotted at any time. A paper tape may also be punched so that the data may be saved for later usage and/or further averaging. The linearity of the scan and reproducibility of the starting position have been tested in detail. The expected increase in signal to noise ratio is observed with no distortion in peak shapes. Kinetic energy release measurements agree with the results obtained by manual scans and an improvement in kinetic energy resolution is noted.
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