enriched uranium

Japanese: enriched uranium(英語表記)enricheduranium
enriched uranium

…Naturally occurring uranium (natural uranium) consists of three isotopes with mass numbers 234, 235, and 238, of which only about 0.7% is fissile 235 U, and about 99.3% is non-fissile 238 U. Uranium enriched to increase the proportion of 235 U is called enriched uranium. Both natural and enriched uranium are used as nuclear fuel. …

*Some of the terminology that mentions "enriched uranium" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…天然に存在するウラン(天然ウラン)は,質量数234,235,238の3種の同位体から構成されており,これに含まれる核分裂性の235Uの割合はわずか約0.7%にすぎず,約99.3%は非核分裂性の238Uである。ウラン濃縮によって235Uの割合を高めたものを濃縮ウランenriched uraniumと呼ぶ。天然ウラン,濃縮ウランはともに核燃料として使用される。…

※「enriched uranium」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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