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The altitude dependence of atmospheric cosmic-ray neutrons and the slow neutron density below a water surface

Authors
Journal
Nuclear Physics
0029-5582
Publisher
Elsevier
Publication Date
Volume
12
Issue
2
Identifiers
DOI: 10.1016/0029-5582(59)90050-1

Abstract

Abstract The altitude dependence of atmospheric cosmic-ray neutrons over Canberra has been found to be exp [− x/160] where x is the atmospheric depth in g/cm 2. The Szilard-Chalmers reaction in a sodium permanganate solution was employed as the neutron detector, and its advantages for the absolute measurement of the cosmic-ray neutron flux are discussed. A similar technique was used to determine the slow neutron flux just below water surface.

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