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Emission of Positrons from a Thorium-Active Deposit

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An Erratum to this article was published on 01 November 1935

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Abstract

USING the magnetic focusing method, we have investigated the energy distribution of the positrons emitted by a source of thorium-active deposit. The positrons were registered by counting the coincidences they produce in two Geiger-Müller counters1. The source from which the positron emission was observed was an aluminium strip 10 thick activated with thorium B + C. The total number of positrons was about 0.02–0.03 per cent of the number of particles from thorium C + C.

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  • 01 November 1935

    In the last line of the letter by Prof. A. I. Alichanow, A. I. Alichanian and M. S. Kosodaew entitled “Emission of Positrons from a Thorium-Active Deposit” published in NATURE of September 21 (p. 475), the words “per cent” should have been inserted after “0-02-0-03”.

References

  1. A. I. Alichanow und M. S. Kosodaew, Z. Phys., B, 90, 249; 1934.

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  2. J. Chadwick, P. M. S. Blackett and G. P. S. Occhialini, Proc. Roy. Soc., A, 144, 235; 1934.

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  3. J. C. Jaeger and H. R. Hulme, Proc. Roy. Soc., A, 148, 708; 1935.

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Authors and Affiliations

  1. Physico-Technical Institute, Leningrad

    A. I. ALICHANOW, A. I. ALICHANIAN & M. S. KOSODAEW

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  1. A. I. ALICHANOW
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  2. A. I. ALICHANIAN
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  3. M. S. KOSODAEW
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ALICHANOW, A., ALICHANIAN, A. & KOSODAEW, M. Emission of Positrons from a Thorium-Active Deposit. Nature 136, 475–476 (1935). https://doi.org/10.1038/136475b0

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