Heavy Nuclei in the Primary Cosmic Radiation at Prince Albert, Canada. I. Carbon, Nitrogen, and Oxygen
- 15 October 1959
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 116 (2) , 436-444
- https://doi.org/10.1103/physrev.116.436
Abstract
A stack of G-5 emulsion, exposed at 120 000 feet for 8 hours at 61°N has been used to study the charge and energy spectrum of heavy nuclei at the low-energy end. Energy measurements have been made on C, N, and O nuclei up to 1 Bev/nucleon. The spectrum shows a broad maximum at 550 Mev/nucleon, extrapolated to the top of the atmosphere. Various possibilities to explain this spectrum are discussed. However, it seems desirable to determine the energy spectrum of the other heavy-nuclei components in this energy region in order to gain a more complete understanding of the whole problem. Measurements of this kind are in progress and will be reported.Keywords
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