衰变产物

在原子核物理學中，衰變產物(也稱至子同位素)是一個元素經過輻射衰變後剩下來的核素。輻射衰變通常涉及很多過程(衰變鏈)。例如，鈾238(U-238)衰變至釷234(Th-234)，釷234(Th-234)再衰變成鏷234(Pa-234)，而鏷234(Pa-234)再衰變成…，再衰變成鉛206(Pb-206)（穩定）:

由鉛212至鉛208的衰變鏈

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

$v$

在這例子中，

釷234，鏷234m，…，鉛206是鈾238的衰變產物；
釷234是鈾238的至子同位素；
鏷234m (234 metastable)是鈾238的[至孫同位素][?]。

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

參考資料

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.

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[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.