Sm

Samarium-143m

Protons (Z)

62

Neutrons (N)

81

Mass number

143

Half-Life

1.1 m

Abundance

---

Mass

142.915 u

Mass Excess

-78,763.1 keV

Spin

11/2-

Discovered

1960

Binding energy per nucleon

8,283 keV

Neutron separation energy

7,853 keV

Proton separation energy

4,910 keV

Decay Mode

Decay chain

Samarium-143Z 62 · N 811.1 m
γ~100%
β⁺100%
EC~100%