Abstract
THE velocities of positive electrons, emitted by boron when bombarded by αparticles of radium C' with a range reduced to 6.3 cm., were investigated by the magnetic focusing method, the electrons being detected by coincidences in two contiguous Geiger-Müller counters1. The measurements could only be extended up to the value of H = 7800. The energy distribution obtained is shown in Fig. 1. For each point of the curve, 100–200 positive electrons were counted. The natural background was 20 per cent of the measured value.
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References
Alichanow, NATURE, 133, 581, April 14, 1934.
Anderson and Neddermeyer, Phys. Rev., 45, 498; 1934.
I. Curie and F. Joliot, NATURE, 133, 201, Feb. 10, 1934. Ellis and Henderaon, NATURE, 133, 530, April 7, 1934. Crane and Lauritsen, Phys. Rev., 45, 430; 1934.
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ALICHANOW, A., ALICHANIAN, A. & DZELEPOW, B. Energy Spectrum of Positive Electrons ejected by Radioactive Nitrogen. Nature 133, 950–951 (1934). https://doi.org/10.1038/133950b0
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DOI: https://doi.org/10.1038/133950b0
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