Am
Americium-238m
Protons (Z)
95
Neutrons (N)
143
Mass number
238
Half-Life
35.0 µs
Abundance
---
Mass
238.055 u
Mass Excess
50,920.0 keV
Spin
---
Discovered
1967
Binding energy per nucleon
7,545 keV
Neutron separation energy
3,721 keV
Proton separation energy
1,461 keV
Decay Mode
- SF100%
- γ→Americium-238
Decay chain
- AmAmericium-238Z 95 · N 14335.0 µs
- γ
- β⁺~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α100%
- α99.98%
- β⁻100%
- β⁻99.976%
- α100%
- β⁻~100%
- β⁻~100%
- α100%