Detection of a Nonuniform Distribution of Polonium-210 on the Moon with the Apollo 16 Alpha Particle Spectrometer
- 1 June 1973
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 180 (4089) , 957-959
- https://doi.org/10.1126/science.180.4089.957
Abstract
The polonium-210 activity of the lunar surface is significantly larger than the activity of its progenitor radon-222. This result establishes unequivocally that radon emanation from the present-day moon varies considerably within the 21-year half-life of lead-210, the parent nuclide of polonium-210. There are large variations and well-localized enhancements in polonium-210 activity over much of the moon's surface.Keywords
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