Am
Americium-239
Protons (Z)
95
Neutrons (N)
144
Mass number
239
Half-Life
11.9 h
Abundance
---
Mass
239.053 u
Mass Excess
49,390.4 keV
Spin
5/2-
Discovered
1949
Binding energy per nucleon
7,554 keV
Neutron separation energy
7,101 keV
Proton separation energy
4,062 keV
Decay Mode
Decay chain
- AmAmericium-239Z 95 · N 14411.9 h
- 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%