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β-Rays of Radium D

Naturevolume 134page772 (1934) | Download Citation

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Abstract

There has been much uncertainty as to the energies of the nuclear-rays of radium D. All the expansion chamber investigations1,2,3,4 showed, in addition to the known secondary β-rays, numerous rays of ranges around 6 mm. in oxygen at S.T.P. and therefore of energies of about 20 kilovolts. These were interpreted by Feather3 and one of us4 (H. O. W. R.) as due to the nuclear electrons.

References

  1. 1

    Kikuchi, Jap. J. Phys., 4, 143; 1927.

  2. 2

    Petrova, Z. Phys., 55, 628; 1929.

  3. 3

    Feather, Proc. Camb. Phil. Soc., 25, 522; 1929.

  4. 4

    Richardson, Roy. Soc. Proc., A, 133, 367; 1931.

  5. 5

    Stahel, Z. Phys., 68, 1; 1931.

  6. 6

    Gray, NATURE, 130, 738, Nov. 12, 1932.

  7. 7

    v. Droste, Z. Phys., 84, 17; 1933.

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Author information

Affiliations

  1. Bedford College, London, N.W.1.

    • H. O. W. RICHARDSON
  2. King's College, London, W.C.2.

    • ALICE LEIGH-SMITH

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https://doi.org/10.1038/134772a0

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