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Coincidence Counter Studies of Cosmic-Ray Showers
Phys. Rev. 49, 711 – Published 15 May, 1936
DOI: https://doi.org/10.1103/PhysRev.49.711
Abstract
It has been found that the production curves (counting rate against thickness of lead) of electron-produced and of photon-produced showers are similar and that the average penetrating power of the rays from electron-produced and from photon-produced showers is the same. Shower production curves have been obtained at four elevations and analysis of the curves shows that the absorption per nucleus of the shower-producing radiation (photons) is approximately proportional to the square of the atomic number. Coefficients for lead (0.33 ), iron, and air have been determined, and a comparison with theory is given. Also the penetrating power of the shower rays emerging from a block of lead has been measured and found to be independent of the elevation and of the thickness of the lead from which the rays emerge.
References (25)
- C. D. Anderson, R. A. Millikan, S. Neddermeyer and W. Pickering, Phys. Rev. 45, 352 (1934)
- P. M. S. Blackett and G. P. S. Occhialini, Proc. Roy. Soc. A139, 699 (1933)
- E. C. Stevenson and J. C. Street, Phys. Rev. 48, 464 (1935)
- H. Geiger and E. Fünfer, Zeits. f. Physik 93, 543 (1935)
- T. H. Johnson, Phys. Rev. 47, 318 (1935)
- T. H. Johnson and D. N. Read, Abstract 2, New York Meeting of Am. Phys. Soc., Feb., 1936
- E. Fünfer, Zeits. f. Physik 83, 92 (1933)
- B. Rossi, Zeits. f. Physik 82, 151 (1933)
- H. Geiger, Ergeb. d. Exakt. Naturwiss. 14, 42 (1935)
- E. C. Stevenson and J. C. Street, Phys. Rev. 49, 425 (1936)
Omitted endnote
- J. C. Street and R. H. Woodward, Phys. Rev. 46, 1029 (1934)
- B. Rossi and S. de Benedetti, Ricerca Scient. 5-II, 379 (1934)
- J. A. Priebsch, Zeits. f. Physik 95, 102 (1935)
- C. G. Montgomery and D. D. Montgomery, Phys. Rev. 47, 429 (1935)
- R. T. Young, Abstract 10, New York Meeting Am. Phys. Soc., Feb. 1936
- C. W. Gilbert, Proc. Roy. Soc. A144, 559 (1934)
- J. R. Oppenheimer, Phys. Rev. 47, 44 (1935)
- W. F. G. Swann, Phys. Rev. 48, 641 (1935)
- M. Ackemann, Naturwiss. 22, 169 (1934)
- J. N. Hummel, Naturwiss. 22, 170 (1934)
- H. Kulenkampff, Physik. Zeits. 22, 785 (1935)
Omitted endnote
- L. W. Nordheim, Phys. Rev. 49, 189 (1936)
- [10] C. D. Anderson and S. H. Neddermeyer, Int. Conf. Physics, London, October 1934 [9]