Periodic Table/Samarium/¹⁶¹Sm

← 160Sm162Sm →

¹⁶¹Sm

Samarium-161

Radioactive· Half-life: 4.80 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

62

Neutrons (N)

99

Mass Number (A)

161

Atomic Mass

160.939160AMU

Spin / Parity

7/2+

Binding E/A

7.925keV

Natural Abundance

Trace / None

Half-life

4.80 s

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

β⁻

100.0%

Decay Chain

¹⁶¹SmSamarium4.80 s

β⁻100.0%

¹⁶¹EuEuropium26.2 s

β⁻100.0%

¹⁶¹GdGadolinium3.65 min

β⁻100.0%

¹⁶¹TbTerbium6.95 d

β⁻100.0%

¹⁶¹DyDysprosiumSTABLE

5-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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