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鎇-241.
鎇-241是鎇在核廢料中最常見的同位素[1],常用於製作以電離室為設計基礎的煙霧探測器,又或作中子源使用[2]。鎇是一種可用於長壽命放射性同位素熱電機的潛在燃料。
鎇-241的來源如下:
镅-241會發生α衰變,並放出伽瑪射線作副產品。由於α衰變的低穿透度,使镅-241只會在被吞吃了或吸入了身體裡,才可能對身體構成損害。镅-241在單質钚的濃度跟單質钚最初的濃度及取樣品的時期相關:年代較久遠的钚-241樣品會有镅-241的積存。因此,當需要使用純綷的钚-241時,就要透過化學方法去移除積存在钚-241裡的镅-241。
以下為镅-241在繼續衰變後的演化過程:
![{\displaystyle \mathrm {^{241}_{\ 95}Am\ {\xrightarrow[{432.2\ year}]{\alpha \ 5.638\ MeV))\ _{\ 93}^{237}Np\ {\xrightarrow[{2\ 144\ 500\ year}]{\alpha \ 4.959\ Mev))\ _{\ 91}^{233}Pa\ {\xrightarrow[{26.967\ days}]{\beta ^{-}\ 0.571\ MeV))\ _{\ 92}^{233}U} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/38e6462dbd0934d8dcd895393ed0414d6a3b55c8)
![{\displaystyle \mathrm {^{233}_{\ 92}U\ {\xrightarrow[{159\ 200\ year}]{\alpha \ 4.909\ MeV))\ _{\ 90}^{229}Th\ {\xrightarrow[{7\ 880\ year}]{\alpha \ 5.168\ MeV))\ _{\ 88}^{225}Ra\ {\xrightarrow[{14.9\ days}]{\beta ^{-}\ 0.357\ MeV))\ _{\ 89}^{225}Ac} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/266f1b711704f2f3664f2bf620d5f8dd27169090)
![{\displaystyle \mathrm {^{225}_{\ 89}Ac\ {\xrightarrow[{10.0\ days}]{\alpha \ 5.935\ MeV))\ _{\ 87}^{221}Fr\ {\xrightarrow[{4.9\ min}]{\alpha \ 6.458\ MeV))\ _{\ 85}^{217}At\ {\xrightarrow[{32.3\ ms}]{\alpha \ 7.202\ MeV))\ _{\ 83}^{213}Bi} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/c63cc9e3eb4c192ce590facb0606e0be2faf62e0)
![{\displaystyle \mathrm {^{213}_{\ 83}Bi\ {\xrightarrow[{45.59\ min}]{\beta ^{-}\ 1.426\ MeV))\ _{\ 84}^{213}Po\ {\xrightarrow[{4.2\ \mu s}]{\alpha \ 8.537\ MeV))\ _{\ 82}^{209}Pb\ {\xrightarrow[{3.253\ hours}]{\beta ^{-}\ 0.644\ MeV))\ _{\ 83}^{209}Bi} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/cef731f5c228c117b2524ee34ea42500f90087d5)
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