Letter | Published:

Large Cosmic Ray Showers and Mesons

Nature volume 145, pages 103104 (20 January 1940) | Download Citation

Subjects

Abstract

IT has been pointed out recently by Bhabha, Carmichael and Chou1 that a meson may produce a large cosmic ray shower by knocking on an atomic electron in a close collision; this electron then produces a shower by the ordinary cascade process. Previously, Bhabha2 had come to the conclusion that large knock-on showers are comparatively unimportant; but he had based his argument on the assumption that the scattering of mesons by electrons could be described by the Dirac relativistic theory. However, Massey and Corben3 have shown that the effect of the spin of the meson is greatly to increase the scattering for high energies of the incident meson and the knocked-on electron. Using Massey and Corben's formula, Bhabha, Carmichael and Chou have shown that the experimental results of Carmichael and Chou4 can be reasonably well explained, whereas the previous theory predicted too few large showers.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1.

    , and , Proc. Indian Acad., A, 10, 221 (1939).

  2. 2.

    , Proc. Roy. Soc., A, 164, 257 (1938).

  3. 3.

    and , Proc. Camb. Phil. Soc., 35, 463 (1939).

  4. 4.

    and , NATURE, 144, 325 (1939).

  5. 5.

    , Proc. Roy. Soc., A, 173, 91 (1939).

Download references

Author information

Affiliations

  1. Trinity College, Cambridge.

    • A. H. WILSON
  2. Clare College, Cambridge. Dec. 22.

    • F. BOOTH

Authors

  1. Search for A. H. WILSON in:

  2. Search for F. BOOTH in:

About this article

Publication history

Published

DOI

https://doi.org/10.1038/145103a0

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.