Abstract
Abstract A microdensitometer utilizing a signal averaging digital computer has been developed to discriminate between the charges of particles producing short tracks in nuclear emulsions. For each track the photoelectric profiles of ten track segments, each 5.0 μm long, were averaged and the result plotted, yielding a mean profile curve. Results of measurements made on tracks produced by known particles of charges 1, 2 and 3 are presented. The normalized area of the profile curve was found to give the best charge separation. Measured photometric mean track width values were corrected for the depth of the tracks in the emulsion. The charge groups were completely separated by measurement of 50 μm of each track, requiring less than 15 min per track.
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