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Isotopes of Europium (Z=63)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
131Eu 26 ms (3/2+,5/2+) %P=100
132Eu %EC+%B+=100
133Eu
134Eu 0.5 s %EC+%B+=100, %ECP > 0
135Eu 1.5 s %EC+%B+=100, %ECP=?
136Eu 3.3 s(7+) %EC+%B+=100, %ECP=0.09
136m1Eu 3.7 s(3+) %EC+%B+=100, %ECP=0.09
137Eu 11 s(11/2-) %EC+%B+=100
138Eu 12.1 s(6-) %EC+%B+=100
139Eu 17.9 s (11/2)- %EC+%B+=100
140Eu 1.51 s1+ %EC+%B+=100
140m1Eu 125 ms(5-) %IT=100 , %EC+%B+ < 1
141Eu 40.7 s5/2+ %EC+%B+=100
141m1Eu 2.7 s11/2- %EC+%B+=13 +4-2 , %IT=87 +2-4
142Eu 2.34 s1+ %EC+%B+=100
142m1Eu 1.22 m8- %EC+%B+=100
143Eu 2.63 m5/2+ %EC+%B+=100
144Eu 10.2 s1+ %EC+%B+=100
145Eu 5.93 d5/2+ %EC+%B+=100
146Eu 4.61 d4- %EC+%B+=100
147Eu 24.1 d5/2+ %EC+B+=100, %A=0.0022 6
148Eu 54.5 d5- %EC+%B+=100, %A=9.4E-7 28
149Eu 93.1 d 5/2+ %EC=100
150Eu 36.9 y 5(-) %EC+%B+=100
150m1Eu 12.8 h 0- %EC+%B+=11 2, %B-=89 2 , %IT < 5E-8
151Eu stable5/2+ %Abundance=47.8 15
152Eu 13.537 y3- %EC=72.1 3 , %B-=27.9 3
152m1Eu 9.3116 h 0- %EC+%B+=28 4 , %B-=72 4
152m2Eu 96 m 8- %IT=100
153Eu stable5/2+ %Abundance=52.2 15
154Eu 8.593 y3- %B-=99.98 1, %EC+%B+=0.02 1
154m1Eu 46.3 m (8-) %IT=100
155Eu 4.7611 y 5/2+ %B-=100
156Eu 15.19 d 0+ %B-=100
157Eu 15.18 h 5/2+ %B-=100
158Eu 45.9 m(1-) %B-=100
159Eu 18.1 m 5/2+ %B-=100
160Eu 38 s 1(-) %B-=100
161Eu 26 s %B-=100
162Eu 10.6 s %B-=100
163Eu
164Eu
165Eu
166Eu
167Eu
 
Last update on
February 15, 2012