Half-Lives for Several Radioactive Isotopes
Paul Flowers; Edward J. Neth; William R. Robinson; Klaus Theopold; and Richard Langley
[latexpage]
| Half-Lives for Several Radioactive Isotopes | |||||
|---|---|---|---|---|---|
| Isotope | Half-Life1 | Type of Emission2 | Isotope | Half-Life3 | Type of Emission4 |
| \({}_{\phantom{\rule{0.5em}{0ex}}6}^{14}\text{C}\) | 5730 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}83}^{210}\text{Bi}\) | 5.01 d | \(\left({\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}7}^{13}\text{N}\) | 9.97 m | \(\left({\beta }^{\text{+}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}83}^{212}\text{Bi}\) | 60.55 m | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}{\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}9}^{15}\text{F}\) | 4.1 \(×\) 10−22 s | \(\left(p\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}84}^{210}\text{Po}\) | 138.4 d | \(\left(\alpha \right)\) |
| \({}_{11}^{24}\text{Na}\) | 15.00 h | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}84}^{212}\text{Po}\) | 3 \(×\) 10−7 s | \(\left(\alpha \right)\) |
| \({}_{15}^{32}\text{P}\) | 14.29 d | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}84}^{216}\text{Po}\) | 0.15 s | \(\left(\alpha \right)\) |
| \({}_{19}^{40}\text{K}\) | 1.27 \(×\) 109 y | \(\left(\beta \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}E.C.\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}84}^{218}\text{Po}\) | 3.05 m | \(\left(\alpha \right)\) |
| \({}_{26}^{49}\text{Fe}\) | 0.08 s | \(\left({\beta }^{\text{+}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}85}^{215}\text{At}\) | 1.0 \(×\) 10−4 s | \(\left(\alpha \right)\) |
| \({}_{26}^{60}\text{Fe}\) | 2.6 \(×\) 106 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}85}^{218}\text{At}\) | 1.6 s | \(\left(\alpha \right)\) |
| \({}_{27}^{60}\text{Co}\) | 5.27 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}86}^{220}\text{Rn}\) | 55.6 s | \(\left(\alpha \right)\) |
| \({}_{37}^{87}\text{Rb}\) | 4.7 \(×\) 1010 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}86}^{222}\text{Rn}\) | 3.82 d | \(\left(\alpha \right)\) |
| \({}_{38}^{90}\text{Sr}\) | 29 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}88}^{224}\text{Ra}\) | 3.66 d | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}49}^{115}\text{In}\) | 5.1 \(×\) 1015 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}88}^{226}\text{Ra}\) | 1600 y | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}53}^{131}\text{I}\) | 8.040 d | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}88}^{228}\text{Ra}\) | 5.75 y | \(\left({\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}58}^{142}\text{Ce}\) | 5 \(×\) 1015 y | \(\left(\alpha \right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}89}^{228}\text{Ac}\) | 6.13 h | \(\left({\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}81}^{208}\text{Tl}\) | 3.07 m | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}90}^{228}\text{Th}\) | 1.913 y | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}82}^{210}\text{Pb}\) | 22.3 y | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}90}^{232}\text{Th}\) | 1.4 \(×\) 1010 y | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}82}^{212}\text{Pb}\) | 10.6 h | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}90}^{233}\text{Th}\) | 22 m | \(\left({\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}82}^{214}\text{Pb}\) | 26.8 m | \(\left({\beta }^{\text{−}}\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}90}^{234}\text{Th}\) | \(\text{24.10 d}\) | \(\left({\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}83}^{206}\text{Bi}\) | 6.243 d | \(\left(E.C.\right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}91}^{233}\text{Pa}\) | 27 d | \(\left({\beta }^{\text{−}}\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}92}^{233}\text{U}\) | 1.59 \(×\) 105 y | \(\left(\alpha \right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}96}^{242}\text{Cm}\) | 162.8 d | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}92}^{234}\text{U}\) | 2.45 \(×\) 105 y | \(\left(\alpha \right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}97}^{243}\text{Bk}\) | 4.5 h | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}E.C.\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}92}^{235}\text{U}\) | 7.03 \(×\) 108 y | \(\left(\alpha \right)\) | \({}_{\phantom{\rule{0.5em}{0ex}}99}^{253}\text{Es}\) | 20.47 d | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}92}^{238}\text{U}\) | 4.47 \(×\) 109 y | \(\left(\alpha \right)\) | \({}_{100}^{254}\text{Fm}\) | 3.24 h | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}S.F.\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}92}^{239}\text{U}\) | 23.54 m | \(\left({\beta }^{\text{−}}\right)\) | \({}_{100}^{255}\text{Fm}\) | 20.1 h | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}93}^{239}\text{Np}\) | 2.3 d | \(\left({\beta }^{\text{−}}\right)\) | \({}_{101}^{256}\text{Md}\) | 76 m | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}E.C.\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}94}^{239}\text{Pu}\) | 2.407 \(×\) 104 y | \(\left(\alpha \right)\) | \({}_{102}^{254}\text{No}\) | 55 s | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}94}^{239}\text{Pu}\) | 6.54 \(×\) 103 y | \(\left(\alpha \right)\) | \({}_{103}^{257}\text{Lr}\) | 0.65 s | \(\left(\alpha \right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}94}^{241}\text{Pu}\) | 14.4 y | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}{\beta }^{\text{−}}\right)\) | \({}_{105}^{260}\text{Ha}\) | 1.5 s | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}S.F.\right)\) |
| \({}_{\phantom{\rule{0.5em}{0ex}}95}^{241}\text{Am}\) | 432.2 y | \(\left(\alpha \right)\) | \({}_{106}^{263}\text{Sg}\) | 0.8 s | \(\left(\alpha \phantom{\rule{0.2em}{0ex}}\text{or}\phantom{\rule{0.2em}{0ex}}S.F.\right)\) |
