Pm

Promethium-144m

Protons (Z)

61

Neutrons (N)

83

Mass number

144

Half-Life

780.0 ns

Abundance

---

Mass

143.913 u

Mass Excess

-80,575.2 keV

Spin

(9+)

Discovered

1993

Binding energy per nucleon

8,299 keV

Neutron separation energy

5,686 keV

Proton separation energy

3,862 keV

Decay Mode

γPromethium-144100%

Decay chain

Promethium-144Z 61 · N 83780.0 ns
γ100%
EC~100%
α100%