The determination of the flux of cosmic ray protons with nuclear emulsions
- 1 November 1960
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 5 (59), 1105-1117
- https://doi.org/10.1080/14786436008238319
Abstract
The flux of protons in the primary cosmic radiation has been determined in a stack of nuclear emulsions exposed during 1954 over northern Italy. This determination, which depended on the observation of the nuclear interactions produced by the protons, gave a flux at the top of the atmosphere of 500±70 protons/m2 ster sec, a value in good agreement with that expected from counter measurements. A simple model of the variation of the proton flux with depth in the atmosphere has been derived which appears to be in reasonable agreement with the experimental data.Keywords
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