Tm
Thulium-155m
Protons (Z)
69
Neutrons (N)
86
Mass number
155
Half-Life
45.0 s
Abundance
---
Mass
154.939 u
Mass Excess
-56,585.0 keV
Spin
1/2+
Discovered
1990
Binding energy per nucleon
8,088 keV
Neutron separation energy
10,229 keV
Proton separation energy
1,269 keV
Decay Mode
Decay chain
- TmThulium-155Z 69 · N 8645.0 s
- β⁺100%
- β⁺99.978%
- β⁺100%
- β⁺100%
- EC100%