U
Uranium-239m
Protons (Z)
92
Neutrons (N)
147
Mass number
239
Half-Life
780.0 ns
Abundance
---
Mass
239.054 u
Mass Excess
50,706.5 keV
Spin
1/2+
Discovered
1975
Binding energy per nucleon
7,558 keV
Neutron separation energy
4,673 keV
Proton separation energy
7,476 keV
Decay Mode
- γ→Uranium-239100%
Decay chain
- UUranium-239Z 92 · N 147780.0 ns
- γ100%
- β⁻100%
- β⁻100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%