放ほう射しゃ性せい系けい列れつ

noun

radioactive series; decay chain

Technical term in nuclear physics for a sequence of radioactive decays from a parent nuclide to a stable daughter.

• ウラン系けい列れつは代だい表ひょう的てきな放ほう射しゃ性せい系けい列れつの一ひとつだ。

  The uranium series is one of the typical radioactive series.