The discoveries of uranium 237 and symmetric fission - from the archival papers of Nishina and Kimura
| Autor: | Nagao Ikeda |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
uranium 237
Isotope Isotopes of uranium Fission Chemistry Archives Thorium neptunium General Physics and Astronomy chemistry.chemical_element General Medicine Review Uranium History 20th Century Neutron temperature Nuclear physics uranium Actinium symmetric fission Isotopes Nuclear fission fast neutron Nuclide General Agricultural and Biological Sciences Nuclear Fission |
| Zdroj: | Proceedings of the Japan Academy. Series B, Physical and Biological Sciences |
| ISSN: | 1349-2896 |
| Popis: | Shortly before the Second World War time, Nishina reported on a series of prominent nuclear physical and radiochemical studies in collaboration with Kimura. They artificially produced (231)Th, a member of the natural actinium series of nuclides, by bombarding thorium with fast neutrons. This resulted in the discovery of (237)U, a new isotope of uranium, by bombarding uranium with fast neutrons, and confirmed that (237)U disintegrates into element 93 with a mass number of 237. They also identified the isotopes of several middle-weighted elements produced by the symmetric fission of uranium. In this review article, the highlights of their work are briefly summarized along with some explanatory commentaries. |
| Databáze: | OpenAIRE |
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