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Science 14 August 1970:
Vol. 169. no. 3946, pp. 670 - 673
DOI: 10.1126/science.169.3946.670
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Articles

Giant Radioactive Halos: Indicators of Unknown Radioactivity?

Robert V. Gentry 1

1 Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830

A new group of giant radioactive halos has been found with radii in excess of anything previously discovered. Since alternate explanations for these giant halos are inconclusive at present, the possibility is considered that they originate with unknown alpha radioactivity, either from isomers of known elements or from superheavy elements.


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