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Absorption of Cosmic Ray Protons in Lead

Abstract

AT the suggestion of Prof. P. M. S. Blackett, we have recently investigated the absorption of cosmic ray protons in lead with a cloud chamber situated in a laboratory with a light roof.

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References

  1. Circuit unpublished. We are indebted to Dr. B. Rossi for the use of the anti-coincidence set.

  2. Anderson, C., Phys. Rev., 50, 263 (1936); Brode, R. B., Macpherson, H. G., and Starr, M. A., Phys. Rev., 50, 581 (1936).

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  3. vide Anderson, ibid., Heitler, W., Powell, C. F., and Fertel, G. E. E., NATURE, 144, 116 (1939).

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ROCHESTER, G., BOUND, M. Absorption of Cosmic Ray Protons in Lead. Nature 146, 745–746 (1940). https://doi.org/10.1038/146745a0

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