Am
Americium-239m
Protons (Z)
95
Neutrons (N)
144
Mass number
239
Half-Life
163.0 ns
Abundance
---
Mass
239.056 u
Mass Excess
51,890.0 keV
Spin
(7/2+)
Discovered
1969
Binding energy per nucleon
7,543 keV
Neutron separation energy
4,601 keV
Proton separation energy
1,562 keV
Decay Mode
- SF100%
- γ→Americium-239
Decay chain
- AmAmericium-239Z 95 · N 144163.0 ns
- γ
- EC99.99%
- α~100%
- α~100%
- β⁻100%
- α~100%
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%