Abstract
WITH a two-fold coincidence apparatus we have determined the intensity distribution of cosmic radiation in the north-south and east-west planes. The measurements were made in all four directions with zenith angles (δ) varied by 5° steps from the vertical to the horizontal. Every position was measured once with no absorber and a second time with 36 cm. lead between the counters. From the results it is possible to determine independently the directional distribution of the hard and of the soft component:
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References
Euler, H., and Heisenberg, W., Erg. d. exact. Naturwiss., 17, 38 (1938).
Yukawa, H., Proc. Phys. Math. Soc. Jap., 19, 712 (1937).
Bethe, H., Proc. Camb. Phil. Soc., 31, 108 (1935).
BarnÓthy, J., and Forró, M., Phys. Rev., 55, 870 (1939). On 1,000 m. water-equivalent depth, about 50 per cent of the radiation consists of soft particles.
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BARNÓTHY, J., FORRÓ, M. Directional Distribution of the Hard and Soft Component of Cosmic Radiation. Nature 144, 116–117 (1939). https://doi.org/10.1038/144116a0
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DOI: https://doi.org/10.1038/144116a0
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