SIZE DISTRIBUTION OF COSMIC RAY STARS IN PHOTOGRAPHIC EMULSIONS
- 1 September 1952
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 30 (5) , 453-458
- https://doi.org/10.1139/p52-044
Abstract
In an analysis of cosmic ray stars found in Ilford G5 emulsions exposed at about 85,000 ft. the star-size distribution curve shows a change in slope at a prong number of about 8.5. A similar effect is shown for emulsions exposed at airplane altitudes, and it is assumed that the effect is mainly due to the composition of the emulsions. While the primary particles producing the stars at about 85,000 ft. are mostly protons, about 50% of the low energy stars are produced by nonionizing radiation, presumably neutrons. a-Particles and heavier nuclei produce about 30% of the larger energetic stars. The absolute frequency of star production is given.Keywords
This publication has 3 references indexed in Scilit:
- CXXIV. Nuclear transmutations produced by cosmic-ray particles of great energy.—Part VI. Experimental results on meson productionJournal of Computers in Education, 1951
- The Altitude and Latitude Variation in the Rate of Occurrence of Nuclear Disintegrations Produced in the Stratosphere by Cosmic RaysPhysical Review B, 1951
- LXXIX.Nuclear transmutations produced by cosmic-ray particles of great energy.-Part I. Observations with photographic plates exposed at an altitude of11,000feetJournal of Computers in Education, 1949