English Dictionary

uranium-235

名詞

不可算名詞

(physics) A fissile isotope of uranium, used for energy generation and in atomic weapons, containing one hundred and forty-three neutrons. It has a half-life of 7·038×10⁸ years; it decays into thorium-231 and ultimately lead.

日本語の意味

ウラン‐235：物理学における核分裂性同位体で、エネルギー生成や原子兵器に使用される。143個の中性子を含み、半減期は7.038×10⁸年で、トリウム‐231へ、最終的には鉛へと崩壊する。

Researchers analyzed the neutron absorption cross-section of uranium-235 to improve reactor-safety models.

研究者たちは原子炉の安全性モデルを改善するため、質量数235のウラン（核分裂性同位体）の中性子吸収断面積を分析した。

意味（1）

(physics) A fissile isotope of uranium, used for energy generation and in atomic weapons, containing one hundred and forty-three neutrons. It has a half-life of 7·038×10⁸ years; it decays into thorium-231 and ultimately lead.

The Zaporizhzhia plant provided about a fifth of Ukraine’s electricity before Russia’s invasion, and has been forced to operate on backup generators a number of times. It has six Soviet-designed water-cooled and water-moderated reactors containing uranium-235.