Isotopes of Krypton (Z=36)

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Isotope Half-life Spin Parity Decay Mode(s) or Abundance
69Kr
70Kr 0+
71Kr 64 ms %EC+%B+=100, %ECP=5.2 6
72Kr 17.2 s0+ %EC+%B+=100
73Kr 27.0 s5/2- %EC+%B+=100, %ECP=0.68 12
74Kr 11.50 m 0+ %EC+%B+=100
75Kr 4.3 m (5/2)+ %EC+%B+=100
76Kr 14.8 h 0+ %EC+%B+=100
77Kr 74.4 m 5/2+ %EC+%B+=100
78Kr stable 0+ %Abundance=0.35 2
79Kr 35.04 h 1/2- %EC+%B+=100
79m1Kr 50 s 7/2+ %IT=100
80Kr stable 0+ %Abundance=2.25 2
81Kr 2.29e+5 y7/2+ %EC=100
81m1Kr 13.10 s 1/2- %IT=99.9975 4, %EC=2.5E-3 4
82Kr stable0+ %Abundance=11.6 1
83Kr stable9/2+ %Abundance=11.5 1
83m1Kr 1.83 h 1/2- %IT=100
84Kr stable0+ %Abundance=57.0 3
85Kr 10.756 y9/2+ %B-=100
85m1Kr 4.480 h1/2- %IT=21.4 4, %B-=78.6 4
86Kr stable0+ %Abundance=17.3 2
87Kr 76.3 m5/2+ %B-=100
88Kr 2.84 h0+ %B-=100
89Kr 3.15 m(3/2+,5/2+) %B-=100
90Kr 32.32 s0+ %B-=100
91Kr 8.57 s(5/2+) %B-=100
92Kr 1.840 s0+ %B-=100, %B-N=0.033 3
93Kr 1.286 s (1/2+) %B-=100, %B-N=1.95 11
94Kr 0.20 s0+ %B-=100, %B-N=5.7 22
95Kr 0.78 s1/2 %B-=100
96Kr 0+
97Kr (3/2+) %B-=?, %B-N=?
98Kr 0+
99Kr (3/2+) %B-=?
100Kr 0+
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
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