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Curium Isotopes






Proton number: 96


Stable Isotopes

There is no Curium Stable isotopes known

Natural Radioactive isotopes

There is no Curium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Curium radioactive isotope number 1: 232Cm
Neutrons: 136;
Jn: 0+;
Decay: SF < 30.3 %;
t1/2: 60s ;

Curium radioactive isotope number 2: 233Cm
Neutrons: 137;
Jn: Unknown;
Decay: α
ε;
t1/2: unknowns ;

Curium radioactive isotope number 3: 234Cm
Neutrons: 138;
Jn: 0+;
Decay: ε ?
α ?;
t1/2: 120s ≈ 2.00 m;

Curium radioactive isotope number 4: 235Cm
Neutrons: 139;
Jn: Unknown;
Decay: α ?
ε ?;
t1/2: 300s ≈ 5.00 m;

Curium radioactive isotope number 5: 236Cm
Neutrons: 140;
Jn: 0+;
Decay: α
ε;
t1/2: unknowns ;

Curium radioactive isotope number 6: 237Cm
Neutrons: 141;
Jn: Unknown;
Decay: α ?
ε ?;
t1/2: 1200s ≈ 20.00 m;

Curium radioactive isotope number 7: 238Cm
Neutrons: 142;
Jn: 0+;
Decay: ε ≥ 90.00 %
α ≤ 10.00 %;
t1/2: 8640s ≈ 2.40 h;

Curium radioactive isotope number 8: 239Cm
Neutrons: 143;
Jn: 7/2-;
Decay: ε : 100.00 %
α < 0.10 %;
t1/2: 10440s ≈ 2.90 h;

Curium radioactive isotope number 9: 240Cm
Neutrons: 144;
Jn: 0+;
Decay: α > 99.50 %
ε < 0.50 %
SF : 3.9E-6 %;
t1/2: 2332800s ≈ 27.00 d;

Curium radioactive isotope number 10: 241Cm
Neutrons: 145;
Jn: 1/2+;
Decay: ε : 99.00 %
α : 1.00 %;
t1/2: 2833920s ≈ 32.80 d;

Curium radioactive isotope number 11: 241Cm
Neutrons: 145;
Jn: Unknown;
Decay: SF : 100.00 %;
t1/2: 1.53E-08s ≈ 15.30 ns;

Curium radioactive isotope number 12: 242Cm
Neutrons: 146;
Jn: 0+;
Decay: α : 100.00 %
SF : 6.2E-6 %
34Si : 1.E-14 %;
t1/2: 14065920s ≈ 162.80 d;

Curium radioactive isotope number 13: 243Cm
Neutrons: 147;
Jn: 5/2+;
Decay: α : 99.71 %
ε : 0.29 %
SF : 5.3E-9 %;
t1/2: 917697600s ≈ 29.10 y;

Curium radioactive isotope number 14: 244Cm
Neutrons: 148;
Jn: 0+;
Decay: α : 100.00 %
SF : 1.4E-4 %;
t1/2: 570801600s ≈ 18.10 y;

Curium radioactive isotope number 15: 244Cm
Neutrons: 148;
Jn: 0+;
Decay: SF ≤ 100.00 %;
t1/2: 5E-07s ≈ 0.50 µs;

Curium radioactive isotope number 16: 244Cm
Neutrons: 148;
Jn: 6+;
Decay: IT : 100.00 %;
t1/2: 0.034s ≈ 34.00 ms;

Curium radioactive isotope number 17: 245Cm
Neutrons: 149;
Jn: 7/2+;
Decay: α : 100.00 %
SF : 6.1E-7 %;
t1/2: 268056000000s ≈ 8.500000e+3 y;

Curium radioactive isotope number 18: 246Cm
Neutrons: 150;
Jn: 0+;
Decay: α : 99.97 %
SF : 0.03 %;
t1/2: 150111400000s ≈ 4.760001e+3 y;

Curium radioactive isotope number 19: 247Cm
Neutrons: 151;
Jn: 9/2-;
Decay: α : 100.00 %;
t1/2: 4.919616E+14s ≈ 1.560000e+7 y;

Curium radioactive isotope number 20: 248Cm
Neutrons: 152;
Jn: 0+;
Decay: α : 91.61 %
SF : 8.39 %;
t1/2: 1.097453E+13s ≈ 3.480001e+5 y;

Curium radioactive isotope number 21: 249Cm
Neutrons: 153;
Jn: 1/2+;
Decay: β - : 100.00 %;
t1/2: 3849s ≈ 1.07 h;

Curium radioactive isotope number 22: 250Cm
Neutrons: 154;
Jn: 0+;
Decay: SF ~ 74.00 %
α ~ 18.00 %
β - ~ 8.00 %;
t1/2: 261748800000s ≈ 8.300000e+3 y;

Curium radioactive isotope number 23: 251Cm
Neutrons: 155;
Jn: 1/2+;
Decay: β - : 100.00 %;
t1/2: 1008s ≈ 16.80 m;

Curium radioactive isotope number 24: 252Cm
Neutrons: 156;
Jn: 0+;
Decay: Unknown;
t1/2: 172800s ≈ 2.00 d;
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