Cosmic ray positron and negatron spectra between 20 and 800 MeV measured in 1974

Details Cosmic ray positron and negatron spectra between 20 and 800 MeV measured in 1974 Cosmic ray positron and negatron spectra between 20 and 800 MeV measured in 1974

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icrc....1..402h&link_type=abstract

In: International Cosmic Ray Conference, 14th, Munich, West Germany, August 15-29, 1975, Conference Papers. Volume 1. (A76-26851

Physics

1

Balloon-Borne Instruments, Cosmic Rays, Energy Spectra, Negatrons, Positrons, Atmospheric Models, Data Processing, Electron Energy, Electron Flux Density, Magnetic Spectroscopy, Optimization, Spark Chambers, Spectrum Analysis

Scientific paper

A balloon-borne spark-chamber magnetic spectrometer has been used to measure separate spectra of positrons and negatrons in two flights during the summer of 1974. The flights reached atmospheric depths of 1.9 and 1.5 g/sq cm after slow ascents which enhance the statistical accuracy of the atmospheric secondary subtraction. The total electron flux is about sq m/s/sr/MeV between 70 and 800 MeV, and increases toward lower energies. The positron spectrum decreases sharply toward lower energies from a value of about 0.08 sq m/s/sr/MeV at 650 MeV, and only upper limits are obtained for positrons below 200 MeV.

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