Natural nuclear fission reactor | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-25

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Natural_nuclear_fission_reactor


00:00:50 1 History
00:02:37 2 Fission product isotope signatures
00:02:48 2.1 Neodymium
00:03:26 2.2 Ruthenium
00:04:14 3 Mechanism of the reactors
00:04:25 4 Relation to the atomic fine-structure constant
00:07:51 5 Origin of the Moon hypothesis
00:08:46 6 See also
00:09:28 7 References



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SUMMARY
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A natural nuclear fission reactor is a uranium deposit where self-sustaining nuclear chain reactions have occurred. This can be examined by analysis of isotope ratios. The existence of this phenomenon was discovered in 1972 at Oklo in Gabon by French physicist Francis Perrin. The conditions under which a natural nuclear reactor could exist had been predicted in 1956 by Paul Kazuo Kuroda. The conditions found were very similar to what was predicted.
Oklo is the only known location for this in the world and consists of 16 sites at which self-sustaining nuclear fission reactions are thought to have taken place approximately 1.7 billion years ago, and ran for a few hundred thousand years, averaging probably less than 100 kW of thermal power during that time.