Cs

Caesium-145m

Protons (Z)

55

Neutrons (N)

90

Mass number

145

Half-Life

500.0 ns

Abundance

---

Mass

144.936 u

Mass Excess

-59,291.0 keV

Spin

(13/2)

Discovered

2015

Binding energy per nucleon

8,183 keV

Neutron separation energy

4,091 keV

Proton separation energy

9,708 keV

Decay Mode

γCaesium-145100%

Decay chain

Caesium-145Z 55 · N 90500.0 ns
γ100%
β⁻87.2%
β⁻100%
β⁻100%
β⁻100%
β⁻100%