Krypton

Isotopes


(Incomplete)
IsotopeAbundanceT½ (s)Decay
67Kr
68Kr
69Kr
70Kr
71Kr
72Kr
73Kr
74Kr
75Kr
76Kr
77Kr
78Kr0.355 %Stable-
79Kr
80Kr2.286 %Stable-
81Kr
82Kr11.593 %Stable-
83Kr11.500 %Stable-
84Kr56.987 %Stable-
85Kr
86Kr17.279 %Stable-
87Kr
88Kr
89Kr
90Kr
91Kr
92Kr
93Kr
94Kr
95Kr
96Kr
97Kr
98Kr
99Kr
100Kr
101Kr
102Kr
All data from [7].


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