Cm
Curium-249m
Protons (Z)
96
Neutrons (N)
153
Mass number
249
Half-Life
23.0 µs
Abundance
---
Mass
249.076 u
Mass Excess
70,799.5 keV
Spin
7/2+
Discovered
1966
Binding energy per nucleon
7,485 keV
Neutron separation energy
4,665 keV
Proton separation energy
7,049 keV
Decay Mode
- α→Plutonium-245100%
Decay chain
- CmCurium-249Z 96 · N 15323.0 µs
- α100%
- β⁻100%
- β⁻100%
- α~100%
- β⁻~100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- α100%
- β⁻100%
- α~100%
- α~100%
- α99.992%
- β⁻97.91%
- α100%
- β⁻100%
- α100%