Appendix M: Half-Lives for Several Radioactive Isotopes
- Page ID
- 415322
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| Isotope | Half-Life1 | Type of Emission2 | Isotope | Half-Life3 | Type of Emission4 |
|---|---|---|---|---|---|
| \({ }_{6}^{14}C\) | \( 5730 \;y \) | \((\beta^{-})\) | \({ }_{83}^{210}Bi\) | \(5.01 \;d\) | \((\beta^{-})\) |
| \({ }_{7}^{13}N\) | \( 9.97 \;m\) | \((\beta^{+})\) | \({ }_{83}^{212}Bi\) | \(60.55 \;m\) | \((\alpha \;or\; beta^{-})\) |
| \({ }_{9}^{15}F\) | \(4.1 \times 10^{-22}s\) | (\(p)\) | \({ }_{84}^{210}Po\) | \(138.4 \;d\) | \((\alpha)\) |
| \({ }_{11}^{24}Na\) | \( 15.00 \;h\) | \((\beta^{-})\) | \({ }_{84}^{212}Po\) | \(3\times 10^{-7}s\) | \((\alpha)\) |
| \({ }_{15}^{32}P\) | \( 14.29 \;d\) | \((\beta^{-})\) | \({ }_{84}^{216}Po\) | \(0.15 \;s\) | \((\alpha)\) |
| \({ }_{19}^{40}K\) | \(1.27 \times 10^{9}y\) | \((\beta \;or\; E.C.)\) | \({ }_{84}^{218}Po\) | \(3.05 \;m\) | \((\alpha)\) |
| \({ }_{26}^{49}Fe\) | \( 0.08 \;s\) | \((\beta^{+})\) | \({ }_{85}^{215}At\) | \(1.0 \times 10^{-4}s\) | \((\alpha)\) |
| \({ }_{26}^{60}Fe\) | \(2.6 \times 10^{6}y\) | \((\beta^{-})\) | \({ }_{85}^{218}At\) | \(1.6 \;s\) | \((\alpha)\) |
| \({ }_{27}^{60}Co\) | \( 5.27 \;y\) | \((\beta^{-})\) | \({ }_{86}^{220}Rn\) | \(55.6 \;s\) | \((\alpha)\) |
| \({ }_{37}^{87}Rb\) | \(4.7 \times 10^{10}y\) | \((\beta^{-})\) | \({ }_{86}^{222}Rn\) | \(3.82 \;d\) | \((\alpha)\) |
| \({ }_{38}^{90}Sr\) | \( 29 \;y\) | \((\beta^{-})\) | \({ }_{88}^{224}Ra\) | \(3.66 \;d\) | \((\alpha)\) |
| \({ }_{49}^{115}In\) | \(5.1 \times 10^{15}y\) | \((\beta^{-})\) | \({ }_{88}^{226}Ra\) | \(1600 \;y\) | \((\alpha)\) |
| \({ }_{53}^{131}I\) | \( 8.040 \;d\) | \((\beta^{-})\) | \({ }_{88}^{228}Ra\) | \(5.75 \;y\) | \((\beta^{-})\) |
| \({ }_{58}^{142}Ce\) | \(5\times 10^{15}y\) | \((\alpha )\) | \({ }_{89}^{228}Ac\) | \(6.13 \;h\) | \((\beta^{-})\) |
| \({ }_{81}^{208}Tl\) | \( 3.07 \;m\) | \((\beta^{-})\) | \({ }_{90}^{228}Th\) | \(1.913 y\) | \((\alpha)\) |
| \({ }_{82}^{210}Pb\) | \( 22.3 \;y\) | \((\beta^{-})\) | \({ }_{90}^{232}Th\) | \(1.4 \times 10^{10}y\) | \((\alpha)\) |
| \({ }_{82}^{212}Pb\) | \( 10.6\; h\) | \((\beta^{-})\) | \({ }_{90}^{233}Th\) | \(22 \;m\) | \((\beta^{-})\) |
| \({ }_{82}^{214}Pb\) | \( 26.8 \;m\) | \((\beta^{-})\) | \({ }_{90}^{234}Th\) | \(24.10 \;d\) | \((\beta^{-})\) |
| \({ }_{83}^{206}Bi\) | \( 6.243 \;d\) | \((E.C.)\) | \({ }_{91}^{233}Pa\) | \(27 d\) | \((\beta^{-})\) |
| \({ }_{92}^{233}U\) | \(1.59 \times 10^{5}y\) | \((\alpha)\) | \({ }_{96}^{242}Cm\) | \(162.8 \;d\) | \((\alpha)\) |
| \({ }_{92}^{234}U\) | \(2.45 \times 10^{5}y\) | \((\alpha)\) | \({ }_{97}^{243}Bk\) | \(4.5 \;h\) | \((\alpha \;or\; E.C.)\) |
| \({ }_{92}^{235}U\) | \(7.03 \times 10^{8}y\) | \((\alpha)\) | \({ }_{99}^{253}Es\) | \(20.47 \;d\) | \((\alpha)\) |
| \({ }_{92}^{238}U\) | \(4.47 \times 10^{9}y\) | \((\alpha)\) | \({ }_{100}^{254}Fm\) | \(3.24 h\) | \((\alpha \;or\; S.F.)\) |
| \({ }_{92}^{239}U\) | \( 23.54 \;m\) | \((\beta^{-})\) | \({ }_{100}^{255}Fm\) | \(20.1 \;h\) | \((\alpha)\) |
| \({ }_{93}^{239}Np\) | \( 2.3 \;d\) | \((\beta^{-})\) | \({ }_{101}^{256}Md\) | \(76 \;m\) | \((\alpha \;or\; E.C.)\) |
| \({ }_{94}^{239}Pu\) | \(2.407 \times 10^{4}y\) | \((\alpha)\) | \({ }_{102}^{254}No\) | \(55 \;s\) | \((\alpha)\) |
| \({ }_{94}^{239}Pu\) | \(6.54 \times 10^{3}y\) | \((\alpha)\) | \({ }_{103}^{257}Lr\) | \(0.65 \;s\) | \((\alpha)\) |
| \({ }_{94}^{241}Pu\) | \( 14.4\; y\) | \((\alpha \;or\; beta^{-})\) | \({ }_{105}^{260}Ha\) | \(1.5 \;s\) | \((\alpha \;or\; S.F.)\) |
| \({ }_{95}^{241}Am\) | \( 432.2\; y\) | \((\alpha)\) | \({ }_{106}^{263}Sg\) | \(0.8 \;s\) | \((\alpha \;or\; S.F.)\) |
Footnotes
- y = years, d = days, h = hours, m = minutes, s = seconds
- E.C. = electron capture, S.F. = Spontaneous fission
- y = years, d = days, h = hours, m = minutes, s = seconds
- E.C. = electron capture, S.F. = Spontaneous fission