ウラン235
1. Uranium-235Uranium-235 is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238 it is fissile, i.e. , it can sustain fission chain reaction. It is the only fissile isotope that is a primordial nuclide or found in significant quantity in nature. Uranium-235 has a half-life of 700 million years. It was discovered in 1935 by Arthur Jeffrey Dempster. Its nuclear cross section for slow thermal neutrons is about 1000 barns.
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Read “Uranium-235” on DBpedia
Read “Uranium-235” on English Wikipedia
Read “ウラン235” on Japanese Wikipedia
Read “Uranium-235” on DBpedia
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