Lu
Lutetium-155m
Protons (Z)
71
Neutrons (N)
84
Mass number
155
Half-Life
138.0 ms
Abundance
---
Mass
154.954 u
Mass Excess
-42,524.0 keV
Spin
1/2+
Discovered
1967
Binding energy per nucleon
7,987 keV
Neutron separation energy
10,925 keV
Proton separation energy
-119 keV
Decay Mode
Decay chain
- LuLutetium-155Z 71 · N 84138.0 ms
- α76%
- β⁺100%
- β⁺100%
- β⁺88%
- β⁺94.4%
- β⁺99.991%
- EC~100%
- α100%
- β⁻100%
- α100%