Periodic Table/Samarium/¹⁵⁹Sm

← 158Sm160Sm →

¹⁵⁹Sm

Samarium-159

Radioactive· Half-life: 11.4 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

62

Neutrons (N)

97

Mass Number (A)

159

Atomic Mass

158.933217AMU

Spin / Parity

5/2-

Binding E/A

7.958keV

Natural Abundance

Trace / None

Half-life

11.4 s

Decay Modesoverview · half-life · α · β⁻ · β⁺

β⁻

100.0%

Decay Chain

¹⁵⁹SmSamarium11.4 s

β⁻100.0%

¹⁵⁹EuEuropium18.1 min

β⁻100.0%

¹⁵⁹GdGadolinium18.5 h

β⁻100.0%

¹⁵⁹TbTerbiumSTABLE

4-step decay chain → stable · Primary path shown

Other Isotopes of Samarium

128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168

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