Gd

Gadolinium-155m

Protons (Z)

64

Neutrons (N)

91

Mass number

155

Half-Life

31.97 ms

Abundance

---

Mass

154.923 u

Mass Excess

-71,949.2 keV

Spin

11/2-

Discovered

1967

Binding energy per nucleon

8,212 keV

Neutron separation energy

6,314 keV

Proton separation energy

7,500 keV

Decay Mode

γGadolinium-155100%

Decay chain

Gadolinium-155Z 64 · N 9131.97 ms
γ100%