Am
Americium-242m
Protons (Z)
95
Neutrons (N)
147
Mass number
242
Half-Life
141.0 y
Abundance
---
Mass
242.06 u
Mass Excess
55,516.6 keV
Spin
5-
Discovered
1950
Binding energy per nucleon
7,535 keV
Neutron separation energy
5,489 keV
Proton separation energy
4,727 keV
Decay Mode
- SF<4.7e-9%
Decay chain
- AmAmericium-242Z 95 · N 147141.0 y
- γ99.55%
- β⁻82.7%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α100%
- α99.98%
- β⁻100%
- β⁻99.976%
- α100%
- β⁻~100%
- β⁻~100%
- α100%