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单词 Separative work unit
释义

Separative work unit

中文百科

浓缩铀 Enriched uranium

(重定向自Separative work unit)
由上至下表示经过不同提炼后的铀-238(蓝色)和铀-235(红色)浓度。

浓缩铀(Enriched Uranium),指经过同位素分离处理后,铀235含量超过天然含量的铀金属,与其相对的是贫化铀。

不论是和平利用核能,还是为制造核武器,浓缩铀都是必要的。因此,国际原子能机构希望能够控制全球各国所有铀浓缩活动,以防止核武器扩散。

浓缩铀根据铀235含量的不同,可以分为高浓缩铀(HEU)(20%以上),低浓缩铀(LEU)(2%-20%)和微浓缩铀(SEU)(0.9%-2%)。铀235含量超过90%则被称为武器级浓缩铀,可直接用于制造原子弹。

英语百科

Enriched uranium 浓缩铀

(重定向自Separative work unit)
Proportions of uranium-238 (blue) and uranium-235 (red) found naturally versus enriched grades
A drum of yellowcake (a mixture of uranium precipitates)
A billet of highly enriched uranium metal
A cascade of gas centrifuges at a U.S. enrichment plant

Enriched uranium is a type of uranium in which the percent composition of uranium-235 has been increased through the process of isotope separation. Natural uranium is 99.284% U isotope, with U only constituting about 0.711% of its weight. U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons.

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更新时间:2025/6/18 5:53:02