Isotopes of Barium (Z=56)

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Isotope Half-life Spin Parity Decay Mode(s) or Abundance
114Ba 0.43 s 0+ %EC+%B+ ~ 100, %A=?, %12C ~ 3E-5
115Ba 0.4 s %EC+%B+=100
116Ba 0.3 s 0+ %EC+%B+=100
117Ba 1.75 s(3/2) %EC+%B+=100, %ECP=?, %ECA=?
118Ba 5.5 s 0+ %EC+%B+=100
119Ba 5.4 s(5/2+) %EC+%B+=100, %ECP < 25 2
120Ba 32 s0+ %EC+%B+=100
121Ba 29.7 s5/2(+) %EC+%B+=100, %ECP=0.02 1
122Ba 1.95 m0+ %EC+%B+=100
123Ba 2.7 m5/2+ %EC+%B+=100
124Ba 11.0 m0+ %EC+%B+=100
125Ba 3.5 m1/2(+) %EC+%B+=100
126Ba 100 m0+ %EC+%B+ =100
127Ba 12.7 m1/2+ %EC+%B+=100
127m1Ba 1.9 s 7/2- %IT=100
128Ba 2.43 d0+ %EC=100
129Ba 2.23 h1/2+ %EC+%B+=100
129m1Ba 2.16 h7/2+ %EC+%B+ < 100, %IT=?
130Ba stable 0+ %Abundance=0.106 2
130m1Ba 11 ms 8- %IT=100
131Ba 11.50 d1/2+ %EC+%B+=100
131m1Ba 14.6 m9/2- %IT=100
132Ba stable 0+ %Abundance=0.101 2
133Ba 10.51 y1/2+ %EC=100
133m1Ba 38.9 h11/2- %EC=0.0096 11, %IT=99.9904 11
134Ba stable0+ %Abundance=2.417 27
134m1Ba 2.63 us(10+)
135Ba stable3/2+ %Abundance=6.592 18
135m1Ba 28.7 h 11/2- %IT=100
136Ba stable0+ %Abundance=7.854 36
136m1Ba 0.3084 s7- %IT=100
137Ba stable3/2+ %Abundance=11.23 4
137m1Ba 2.552 m11/2- %IT=100
138Ba stable0+ %Abundance=71.70 7
139Ba 83.06 m7/2- %B-=100
140Ba 12.752 d0+ %B-=100
141Ba 18.27 m3/2- %B-=100
142Ba 10.6 m0+ %B-=100
143Ba 14.33 s5/2- %B-=100
144Ba 11.5 s0+ %B-=100, %B-N=3.6 7
145Ba 4.31 s5/2- %B-=100
146Ba 2.22 s0+ %B-=100
147Ba 0.893 s (3/2+) %B-=100, %B-N=0.06 3
148Ba 0.607 s0+ %B-=100, %B-N=0.4 3
149Ba 0.344 s %B-=100, %B-N=0.43 12
150Ba 0.3 s 0+ %B-=100, %B-N=?
151Ba
152Ba 0+
153Ba
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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