N1: Half-Lives for Several Radioactive Isotopes

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Nov 3, 2020
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- Nuclear Tables
- Solvents

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Half-Lives for Several Radioactive Isotopes
Isotope	Half-Life1	Type of Emission2	Isotope	Half-Life3	Type of Emission4
$\ce{^{14}_6C}$	5730 y	$(β^−)$	$\ce{^{210}_{83}Bi}$	5.01 d	$(β^−)$
$\ce{^{13}_7N}$	9.97 m	$(β^+)$	$\ce{^{212}_{83}Bi}$	60.55 m	$(α\textrm{ or }β^−)$
$\ce{^{15}_9F}$	4.1 × 10⁻²² s	$(p)$	$\ce{^{210}_{84}Po}$	138.4 d	$(α)$
$\ce{^{24}_{11}Na}$	15.00 h	$(β^−)$	$\ce{^{212}_{84}Po}$	3 × 10⁻⁷ s	$(α)$
$\ce{^{32}_{15}P}$	14.29 d	$(β^−)$	$\ce{^{216}_{84}Po}$	0.15 s	$(α)$
$\ce{^{40}_{19}K}$	1.27 × 10⁹ y	$(β\textrm{ or }E.C.)$	$\ce{^{218}_{84}Po}$	3.05 m	$(α)$
$\ce{^{49}_{26}Fe}$	0.08 s	$(β^+)$	$\ce{^{215}_{85}At}$	1.0 × 10⁻⁴ s	$(α)$
$\ce{^{60}_{26}Fe}$	2.6 × 10⁶ y	$(β^−)$	$\ce{^{218}_{85}At}$	1.6 s	$(α)$
$\ce{^{60}_{27}Co}$	5.27 y	$(β^−)$	$\ce{^{220}_{86}Rn}$	55.6 s	$(α)$
$\ce{^{87}_{37}Rb}$	4.7 × 10¹⁰ y	$(β^−)$	$\ce{^{222}_{86}Rn}$	3.82 d	$(α)$
$\ce{^{90}_{38}Sr}$	29 y	$(β^−)$	$\ce{^{224}_{88}Ra}$	3.66 d	$(α)$
$\ce{^{115}_{49}In}$	5.1 × 10¹⁵ y	$(β^−)$	$\ce{^{226}_{88}Ra}$	1600 y	$(α)$
$\ce{^{131}_{53}I}$	8.040 d	$(β^−)$	$\ce{^{228}_{88}Ra}$	5.75 y	$(β^−)$
$\ce{^{142}_{58}Ce}$	5 × 10¹⁵ y	$(α)$	$\ce{^{228}_{89}Ac}$	6.13 h	$(β^−)$
$\ce{^{208}_{81}Tl}$	3.07 m	$(β^−)$	$\ce{^{228}_{90}Th}$	1.913 y	$(α)$
$\ce{^{210}_{82}Pb}$	22.3 y	$(β^−)$	$\ce{^{232}_{90}Th}$	1.4 × 10¹⁰ y	$(α)$
$\ce{^{212}_{82}Pb}$	10.6 h	$(β^−)$	$\ce{^{233}_{90}Th}$	22 m	$(β^−)$
$\ce{^{214}_{82}Pb}$	26.8 m	$(β^−)$	$\ce{^{234}_{90}Th}$	24.10 d	$(β^−)$
$\ce{^{206}_{83}Bi}$	6.243 d	$(E.C.)$	$\ce{^{233}_{91}Pa}$	27 d	$(β^−)$
$\ce{^{233}_{92}U}$	1.59 × 10⁵ y	$(α)$	$\ce{^{242}_{96}Cm}$	162.8 d	$(α)$
$\ce{^{234}_{92}U}$	2.45 × 10⁵ y	$(α)$	$\ce{^{243}_{97}Bk}$	4.5 h	$(α\textrm{ or }E.C.)$
$\ce{^{235}_{92}U}$	7.03 × 10⁸ y	$(α)$	$\ce{^{253}_{99}Es}$	20.47 d	$(α)$
$\ce{^{238}_{92}U}$	4.47 × 10⁹ y	$(α)$	$\ce{^{254}_{100}Fm}$	3.24 h	$(α\textrm{ or }S.F.)$
$\ce{^{239}_{92}U}$	23.54 m	$(β^−)$	$\ce{^{255}_{100}Fm}$	20.1 h	$(α)$
$\ce{^{239}_{93}Np}$	2.3 d	$(β^−)$	$\ce{^{256}_{101}Md}$	76 m	$(α\textrm{ or }E.C.)$
$\ce{^{239}_{94}Pu}$	2.407 × 10⁴ y	$(α)$	$\ce{^{254}_{102}No}$	55 s	$(α)$
$\ce{^{239}_{94}Pu}$	6.54 × 10³ y	$(α)$	$\ce{^{257}_{103}Lr}$	0.65 s	$(α)$
$\ce{^{241}_{94}Pu}$	14.4 y	$(α\textrm{ or }β^−)$	$\ce{^{260}_{105}Ha}$	1.5 s	$(α\textrm{ or }S.F.)$
$\ce{^{241}_{95}Am}$	432.2 y	$(α)$	$\ce{^{263}_{106}Sg}$	0.8 s	$(α\textrm{ or }S.F.)$

Footnotes

1 y = years, d = days, h = hours, m = minutes, s = seconds
2 E.C. = electron capture, S.F. = Spontaneous fission
3 y = years, d = days, h = hours, m = minutes, s = seconds
4 E.C. = electron capture, S.F. = Spontaneous fission

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