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Artificial radioactivity produced by cosmic rays

โœ Scribed by J. Clay; M.A. Van Tijn

Publisher
Elsevier Science
Year
1937
Weight
805 KB
Volume
4
Category
Article
ISSN
0031-8914

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โœฆ Synopsis

By using an ionisation instrument which records every one or two minutes it is possible to follow the variation of intensity of a radiation. We found that variations of gamma radiation were followed without any delay. On the contrary the variation of the intensity of cosmic radiation, by changing the thickness of an iron shield, showed that there must be produced a radioactive substance with a time of decay, of 8,6 minutes. Also under thick layers there is formed another atom, which we think to be the product of neutrons.

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