Isotopes of Gadolinium (Z=64)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
136Gd
137Gd 7 s %EC+%B+=100
138Gd 0+
139Gd 4.9 s9/2- %EC+%B+=?, %B+P=?
140Gd 15.8 s0+ %EC+%B+=100
141Gd 14 s(1/2+) %EC+%B+=100, %ECP=0.03 1
141m1Gd 24.5 s(11/2-) %EC+%B+=89 2, %IT=11 2
142Gd 70.2 s0+ %EC+%B+=100
143Gd 39 s(1/2)+ %EC+%B+=100, %ECP < 0.001
143m1Gd 112 s(11/2-) %EC+%B+=100
144Gd 4.5 m0+ %EC+%B+=100
145Gd 23.0 m1/2+ %EC+%B+=100
145m1Gd 85 s11/2- %IT=94.3 5 , %EC+%B+=5.7 5
146Gd 48.27 d0+ %EC=100
147Gd 38.06 h 7/2- %EC+%B+=100
148Gd 74.6 y0+ %A=100
149Gd 9.28 d7/2- %EC+%B+=100, %A=4.3E-4 10
150Gd 1.79e6 y 0+ %A=100
151Gd 124 d 7/2- %EC=100, %A ~ 8E-7
152Gd 1.08e14 y 0+ %Abundance=0.20 1, %A=100
153Gd 240.4 d3/2- %EC=100
154Gd stable 0+ %Abundance=2.18 3
155Gd stable 3/2- %Abundance=14.80 5
155m1Gd 31.97 ms 11/2- %IT=100
156Gd stable 0+ %Abundance=20.47 4
157Gd stable 3/2- %Abundance=15.65 3
158Gd stable0+ %Abundance=24.84 12
159Gd 18.479 h 3/2- %B-=100
160Gd stable 0+ %Abundance=21.86 4
161Gd 3.66 m 5/2- %B-=100
162Gd 8.4 m 0+ %B-=100
163Gd 68 s(5/2-) %B-=100
164Gd 45 s 0+ %B-=100
165Gd
166Gd 0+
167Gd
168Gd 0+
169Gd
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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