High-energy cosmic-ray electrons - A new measurement using transition-radiation detectors

Details High-energy cosmic-ray electrons - A new measurement using transition-radiation detectors High-energy cosmic-ray electrons - A new measurement using transition-radiation detectors

Jun 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phrvl..38.1368h&link_type=abstract

Physical Review Letters, vol. 38, June 6, 1977, p. 1368-1372.

Physics

25

Balloon-Borne Instruments, Cosmic Ray Showers, Electron Transitions, Energy Spectra, High Energy Electrons, Radiation Detectors, Balloon Flight, Data Reduction, Histograms, Radiative Lifetime

Scientific paper

A new detector for cosmic-ray electrons, consisting of a combination of a transition-radiation detector and a shower detector, has been constructed, calibrated at accelerator beams, and exposed in a balloon flight under 5 g/sq cm of atmosphere. The design of this instrument and the methods of data analysis are described. Preliminary results in the energy range 9-300 GeV are presented. The energy spectrum of electrons is found to be significantly steeper than that of protons, consistent with a long escape lifetime of cosmic rays in the galaxy.

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