Computer Science – Sound
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974jgr....79.5159k&link_type=abstract
Journal of Geophysical Research, vol. 79, Dec. 1, 1974, p. 5159-5165.
Computer Science
Sound
13
Cosmic Ray Albedo, Earth Albedo, Energy Spectra, Inner Radiation Belt, Neutron Decay, Angular Distribution, Balloon Sounding, Elastic Scattering, Monte Carlo Method, Neutron Flux Density, Optical Thickness, Radiation Measurement, Spark Chambers
Scientific paper
The results of high energy neutron measurements during two balloon flights on May 1 and 25, 1971, from Palestine, Texas, are reported. At atmospheric depths of 8.6 and 4.7 g/sq cm we obtained the energy and angular distribution of atmospheric neutrons between 70 and 250 MeV. The angular distribution of the neutron flux shows a pronounced peak in the horizontal direction (zenith angle, 90 deg) with a full width at half maximum of about 30 deg. The measured energy spectrum is in good agreement with results of recent Monte-Carlo calculations on atmospheric neutrons. Together with the angular distribution it also confirms theoretical estimates of the albedo neutron source strength required in a Crand (cosmic ray albedo neutron decay) theory where the high-energy protons in the earth's inner radiation belt are injected by decaying neutrons.
Kanbach Gottfried
Reppin Claus
Schoenfelder Volker
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