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Gadolinium Isotopes






Proton number: 64


Stable Isotopes


Gadolinium stable isotope number 1: 154Gd
Neutrons: 90;
Abundance: 2.18%;
Jn: 0+;

Gadolinium stable isotope number 2: 155Gd
Neutrons: 91;
Abundance: 14.8%;
Jn: 3/2-;

Gadolinium stable isotope number 3: 156Gd
Neutrons: 92;
Abundance: 20.47%;
Jn: 0+;

Gadolinium stable isotope number 4: 157Gd
Neutrons: 93;
Abundance: 15.65%;
Jn: 3/2-;

Gadolinium stable isotope number 5: 158Gd
Neutrons: 94;
Abundance: 24.84%;
Jn: 0+;

Natural Radioactive isotopes


Gadolinium radioactive isotope number 1: 152Gd
Neutrons: 88;
Abundance: 0.2%;
Jn: 0+;
Decay: α : 100.00 %;
t1/2: 3.405888E+21s ≈ 1.080000e+14 y;

Gadolinium radioactive isotope number 2: 160Gd
Neutrons: 96;
Abundance: 21.86%;
Jn: 0+;
Decay: 2β -;
t1/2: 9.77616E+26s ≈ 3.100000e+19 y;

Artificial Radioactive isotopes


Gadolinium radioactive isotope number 1: 134Gd
Neutrons: 70;
Jn: 0+;
Decay: ε ?;
t1/2: 0.4s ;

Gadolinium radioactive isotope number 2: 135Gd
Neutrons: 71;
Jn: Unknown;
Decay: ε : 100.00 %
ε p ~ 2.00 %;
t1/2: 1.1s ;

Gadolinium radioactive isotope number 3: 136Gd
Neutrons: 72;
Jn: 0+;
Decay: Unknown;
t1/2: 2E-07s ≈ 0.20 µs;

Gadolinium radioactive isotope number 4: 137Gd
Neutrons: 73;
Jn: 7/2;
Decay: ε : 100.00 %
ε p;
t1/2: 2.2s ;

Gadolinium radioactive isotope number 5: 138Gd
Neutrons: 74;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 4.7s ;

Gadolinium radioactive isotope number 6: 139Gd
Neutrons: 75;
Jn: 9/2-;
Decay: ε p > 0.00 %
ε > 0.00 %;
t1/2: 5.8s ;

Gadolinium radioactive isotope number 7: 139Gd
Neutrons: 75;
Jn: Unknown;
Decay: ε p > 0.00 %
ε > 0.00 %;
t1/2: 4.8s ;

Gadolinium radioactive isotope number 8: 140Gd
Neutrons: 76;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 15.8s ;

Gadolinium radioactive isotope number 9: 141Gd
Neutrons: 77;
Jn: 1/2+;
Decay: ε : 100.00 %
ε p : 0.03 %;
t1/2: 14s ;

Gadolinium radioactive isotope number 10: 141Gd
Neutrons: 77;
Jn: 11/2-;
Decay: ε : 89.00 %
IT : 11.00 %;
t1/2: 24.5s ;

Gadolinium radioactive isotope number 11: 142Gd
Neutrons: 78;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 70.2s ;

Gadolinium radioactive isotope number 12: 143Gd
Neutrons: 79;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 39s ;

Gadolinium radioactive isotope number 13: 143Gd
Neutrons: 79;
Jn: 11/2-;
Decay: ε : 100.00 %;
t1/2: 110s ;

Gadolinium radioactive isotope number 14: 144Gd
Neutrons: 80;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 268.2s ≈ 4.47 m;

Gadolinium radioactive isotope number 15: 145Gd
Neutrons: 81;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 1380s ≈ 23.00 m;

Gadolinium radioactive isotope number 16: 145Gd
Neutrons: 81;
Jn: 11/2-;
Decay: IT : 94.30 %
ε : 5.70 %;
t1/2: 85s ;

Gadolinium radioactive isotope number 17: 146Gd
Neutrons: 82;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 4170528s ≈ 48.27 d;

Gadolinium radioactive isotope number 18: 147Gd
Neutrons: 83;
Jn: 7/2-;
Decay: ε : 100.00 %;
t1/2: 137016s ≈ 38.06 h;

Gadolinium radioactive isotope number 19: 148Gd
Neutrons: 84;
Jn: 0+;
Decay: α : 100.00 %;
t1/2: 2235902000s ≈ 70.90 y;

Gadolinium radioactive isotope number 20: 149Gd
Neutrons: 85;
Jn: 7/2-;
Decay: ε : 100.00 %
α : 4.3E-4 %;
t1/2: 801792s ≈ 9.28 d;

Gadolinium radioactive isotope number 21: 150Gd
Neutrons: 86;
Jn: 0+;
Decay: α : 100.00 %;
t1/2: 5.644944E+13s ≈ 1.790000e+6 y;

Gadolinium radioactive isotope number 22: 151Gd
Neutrons: 87;
Jn: 7/2-;
Decay: ε : 100.00 %
α ~ 8.0E-7 %;
t1/2: 10713600s ≈ 124.00 d;

Gadolinium radioactive isotope number 23: 153Gd
Neutrons: 89;
Jn: 3/2-;
Decay: ε : 100.00 %;
t1/2: 20770560s ≈ 240.40 d;

Gadolinium radioactive isotope number 24: 153Gd
Neutrons: 89;
Jn: 9/2+;
Decay: IT : 100.00 %;
t1/2: 3.5E-06s ≈ 3.50 µs;

Gadolinium radioactive isotope number 25: 153Gd
Neutrons: 89;
Jn: 11/2-;
Decay: IT : 100.00 %;
t1/2: 7.6E-05s ≈ 76.00 µs;

Gadolinium radioactive isotope number 26: 157Gd
Neutrons: 93;
Jn: 11/2-;
Decay: IT : 100.00 %;
t1/2: 1.85E-05s ≈ 18.50 µs;

Gadolinium radioactive isotope number 27: 159Gd
Neutrons: 95;
Jn: 3/2-;
Decay: β - : 100.00 %;
t1/2: 66524.4s ≈ 18.48 h;

Gadolinium radioactive isotope number 28: 161Gd
Neutrons: 97;
Jn: 5/2-;
Decay: β - : 100.00 %;
t1/2: 219.6s ≈ 3.66 m;

Gadolinium radioactive isotope number 29: 162Gd
Neutrons: 98;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 504s ≈ 8.40 m;

Gadolinium radioactive isotope number 30: 163Gd
Neutrons: 99;
Jn: 5/2-,7/2+;
Decay: β - : 100.00 %;
t1/2: 68s ;

Gadolinium radioactive isotope number 31: 164Gd
Neutrons: 100;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 45s ;

Gadolinium radioactive isotope number 32: 165Gd
Neutrons: 101;
Jn: Unknown;
Decay: β - : 100.00 %;
t1/2: 10.3s ;

Gadolinium radioactive isotope number 33: 166Gd
Neutrons: 102;
Jn: 0+;
Decay: β -;
t1/2: 7s ;

Gadolinium radioactive isotope number 34: 167Gd
Neutrons: 103;
Jn: Unknown;
Decay: β - ?;
t1/2: 3s ;

Gadolinium radioactive isotope number 35: 168Gd
Neutrons: 104;
Jn: 0+;
Decay: β - ?;
t1/2: 0.3s ;

Gadolinium radioactive isotope number 36: 169Gd
Neutrons: 105;
Jn: Unknown;
Decay: β - ?;
t1/2: 1s ;
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