衰变产物

在原子核物理学中，衰变产物(也称至子同位素)是一个元素经过辐射衰变后剩下来的核素。辐射衰变通常涉及很多过程(衰变链)。例如，铀238(U-238)衰变至钍234(Th-234)，钍234(Th-234)再衰变成镤234(Pa-234)，而镤234(Pa-234)再衰变成…，再衰变成铅206(Pb-206)（稳定）:

${\displaystyle \mbox{U-238} \rightarrow \overbrace{ \underbrace{\mbox{Th-234}}_{\mbox{daughter of U-238}} \rightarrow \underbrace{\mbox{Pa-234m}}_{\mbox{granddaughter of U-238}} \rightarrow \ldots \rightarrow \mbox{Pb-206} }^{\begin{array}{c} \mbox{decay products of U-238} \end{array}} }$

${\displaystyle v }$

在这例子中，

钍234，镤234m，…，铅206是铀238的衰变产物；
钍234是铀238的至子同位素；
镤234m (234 metastable)是铀238的[至孙同位素][?]。

These might also be referred to as the daughter products of U-238.^[1]

参考资料

↑ Glossary of Volume 7 (Depleted Uranium — authors: Naomi H. Harley, Ernest C. Foulkes, Lee H. Hilborne, Arlene Hudson, and C. Ross Anthony) of A review of the scientific literature as it pertains to gulf war illnesses.

[1] Glossary of Volume 7 (Depleted Uranium — authors: Naomi H. Harley, Ernest C. Foulkes, Lee H. Hilborne, Arlene Hudson, and C. Ross Anthony) of A review of the scientific literature as it pertains to gulf war illnesses.

[1]