Argon

Isotopes


(Incomplete)
IsotopeAbundanceT½ (s)Decay
30Ar
31Ar
32Ar
33Ar
34Ar
35Ar
36Ar0.3336 %Stable-
37Ar
38Ar0.0629 %Stable-
39Ar
40Ar99.6035 %Stable-
41Ar
42Ar
43Ar
44Ar
45Ar
46Ar
47Ar
48Ar
49Ar
50Ar
51Ar
52Ar
53Ar
All data from [9].


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