Abstract
IN NATURE for September 3, 1932, p. 364, I published the curve of the intensity of cosmic radiation in the high atmosphere, deduced from measurements made with a self-registering electrometer. It was possible by extrapolation to find the intensity I of radiation at its entrance in the atmosphere. The preliminary value given has now been corrected by the experimental determination of the factor which reduces the measurements with the ionisation chamber at 5 atmospheres to 1 atmosphere. Now the value Iα is found corresponding to a production of 333 pairs of ions cm.-3 sec.-1 in air at 0° and 760 mm. mercury pressure.
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References
Phys. Rev., 31, 930; 1928.
H. Kulenkampff, Phys. Z., 30, 777; 1929.
"Internal Constitution of the Stars", German edition, p. 468, 1928.
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REGENER, E. Energy of Cosmic Rays. Nature 131, 130 (1933). https://doi.org/10.1038/131130a0
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DOI: https://doi.org/10.1038/131130a0
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