Cs
Caesium-144m
Protons (Z)
55
Neutrons (N)
89
Mass number
144
Half-Life
1.1 µs
Abundance
---
Mass
143.932 u
Mass Excess
-63,179.0 keV
Spin
(4-)
Discovered
2009
Binding energy per nucleon
8,211 keV
Neutron separation energy
3,574 keV
Proton separation energy
10,265 keV
Decay Mode
- γ→Caesium-144100%
Decay chain
- CsCaesium-144Z 55 · N 891.1 µs
- γ100%
- β⁻97.02%
- β⁻100%
- β⁻100%
- β⁻100%
- β⁻100%
- α100%