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The spectrum of cosmic electron with energies between 6 and 100 GeVThis experiment was carried out during three balloon flights which provided a total exposure of 3500 + or - 60 sq m sec sterad at an average depth of 4.8 g/sq cm The detector, in which the development of cascade showers in a 33.7 rl absorber was sampled by 10 scintillation counters and 216 Geiger-Muller tubes, was calibrated at the Cornell Electron Synchrotron, the separation of cosmic electrons from the nuclear background was confirmed by extensive analysis of data from the flights, from the calibration and from ground level exposure. The spectral intensity of primary cosmic ray electrons were found in particles/sq m sec sterad GeV. Similarly, the ground level spectrum of secondary cosmic ray electrons was also found. The steepness of the spectrum of cosmic electrons relative to that of nuclei implies one of the following conclusions: either the injection spectrum of electrons is steeper than that of nuclei, or the electron spectrum has been steepened by Compton/synchrotron losses in the energy range covered by the experiment.
Document ID
19750006629
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Meegan, C. A.
(Maryland Univ. College Park, MD, United States)
Earl, J. A.
(Maryland Univ. College Park, MD, United States)
Date Acquired
September 3, 2013
Publication Date
October 1, 1974
Subject Category
Space Radiation
Report/Patent Number
NASA-CR-141287
TR-75-019
Accession Number
75N14701
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-066
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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