Isotopes of Argon (Z=18)

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Isotope Half-life Spin Parity Decay Mode(s) or Abundance
30Ar 20 ns 0+ %P=?
31Ar 15.1 ms %EC+%B+=100, %ECP=42 4, %EC2P=2.48 15, %EC3P=2.1 10
32Ar 98 ms0+ %EC+%B+=100, %ECP=43 3
33Ar 173.0 ms 1/2+ %EC+%B+=100, %ECP=38.7 10
34Ar 844.5 ms0+ %EC+%B+=100
35Ar 1.775 s 3/2+ %EC+%B+=100
36Ar stable 0+ %Abundance=0.337 3
37Ar 35.04 d 3/2+ %EC=100
38Ar stable 0+ %Abundance=0.063 1
39Ar 269 y 7/2- %B-=100
40Ar stable 0+ %Abundance=99.600 3
41Ar 109.34 m 7/2- %B-=100
42Ar 32.9 y 0+ %B-=100
43Ar 5.37 m (3/2,5/2) %B-=100
44Ar 11.87 m 0+ %B-=100
45Ar 21.48 s %B-=100
46Ar 8.4 s 0+ %B-=100
47Ar 700 ms %B-=100, %B-N < 1
48Ar 0+
49Ar
50Ar 0+
51Ar
52Ar 0+
53Ar
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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