Cs

Caesium-146m

Protons (Z)

55

Neutrons (N)

91

Mass number

146

Half-Life

1.25 µs

Abundance

---

Mass

145.941 u

Mass Excess

-55,263.7 keV

Spin

(4-)

Discovered

2015

Binding energy per nucleon

8,155 keV

Neutron separation energy

3,281 keV

Proton separation energy

11,060 keV

Decay Mode

γCaesium-146100%

Decay chain

Caesium-146Z 55 · N 911.25 µs
γ100%
β⁻85.8%
β⁻100%
β⁻100%
β⁻100%
β⁻100%