科研之友
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摘要
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 Th-231, a member of the natural actinium series of nuclides, by bombarding thorium with fast neutrons. This resulted in the discovery of U-237, a new isotope of uranium, by bombarding uranium with fast neutrons, and confirmed that U-237 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.
- 出版日期2011-7
