衰变产物
由鉛212至鉛208的衰變鏈
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）:
U-238→Th-234⏟daughter of U-238→Pa-234m⏟granddaughter of U-238→…→Pb-206⏞decay products of U-238{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}}}
v{displaystyle 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
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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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