Intensity of primary electrons above 10 GeVA nuclear emulsion-spark chamber-counter electron telescope has been flown on a balloon at 3.5 g/sq cm residual pressure over Palestine, Texas, where the vertical cutoff is 4.5 GeV. The spark chamber pictures permitted the elimination of about 50% of the events whose counter signatures alone would qualify them as electrons. Of those events identified as 'electron-like' by counters and spark chambers, only 43% turn out to be electrons when found in the emulsion. The resulting intensities are among the lowest currently reported and are in good agreement with earlier results. The differential intensity in the region 8-40 GeV is measured.
Document ID
19760043914
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Freier, P. (Minnesota Univ. Minneapolis, MN, United States)
Gilman, C. (Minnesota Univ. Minneapolis, MN, United States)
Waddington, C. J. (Minnesota, University Minneaplis, Minn., United States)