Other
Scientific paper
Jun 1972
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972zphy..256..226s&link_type=abstract
Zeitschrift für Physik, Volume 256, Issue 3, pp.226-235
Other
1
Scientific paper
A scintillation counter telescope has been flown in the upper atmosphere at2.4g/cm2 from Bergen/Lüneburger Heide for the measurement of electrons and photons of the secondary cosmic radiation. The aim was to get the differential energy spectra of secondary photons in an energy range from 1 to 44 MeV and of secondary and return albedo electrons from 2 to 35 MeV for three different zenith angles (0 °, 90 ° and 180 °). The received photon spectrum is in good agreement to the results of other authors as well to lower as to higher energies. It has been shown, that the spectrum has a great anisotropy with a maximum of intensity around the horizon. The main reason therefore is the atmospheric deepness in the different directions. In this energy range we have found that the Bremsstrahlung of the return albedo electrons is the main reason for the photon flux and secondly the π0-decay. The measured electron spectra don't show any significant difference relative to the three zenith angles. These secondary electrons are produced isotropically in the upper atmosphere and they consist of a mixture of secondary and return albedo electrons.
Röhrs Heinrich
Scheel Jochen
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