Iron

Isotopes


(Incomplete)
IsotopeAbundanceT½ (s)Decay
45Fe
46Fe
47Fe
48Fe
49Fe
50Fe
51Fe
52Fe
53Fe
54Fe5.845 %Stable-
55Fe
56Fe91.754 %Stable-
57Fe2.119 %Stable-
58Fe0.282 %Stable-
59Fe
60Fe
61Fe
62Fe
63Fe
64Fe
65Fe
66Fe
67Fe
68Fe
69Fe
70Fe
72Fe
73Fe
74Fe
75Fe
76Fe
All data from [8].


α: alpha particle emission (4He nucleus)
β+: emission of an anti-electron and a neutrino. A proton inside the nucleus is transformed into a neutron
β-: emission of an electron and an anti-neutrino. A neutron inside the nucleus is transformed into a proton
ec: electron capture: capture of one orbital electron by the the nucleus. A proton inside the nucleus is transformed into a neutron plus a neutrino
SF: Spontaneous Fission: a nucleus spontaneously splits into fragment nuclides
IT: Isomeric Transition: a level above the ground state decays via electromagnetic process
n: neutron emission
p: proton emission
β- n (and similar): beta- decay followed by delayed neutron emission