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Calcium Isotopes

Proton number: 20

Stable Isotopes


Calcium stable isotope number 1: 42Ca
Neutrons: 22;
Abundance: 0.647%;
Jn: 0+;

Calcium stable isotope number 2: 43Ca
Neutrons: 23;
Abundance: 0.135%;
Jn: 7/2-;

Calcium stable isotope number 3: 44Ca
Neutrons: 24;
Abundance: 2.09%;
Jn: 0+;

Natural Radioactive isotopes


Calcium radioactive isotope number 1: 40Ca
Neutrons: 20;
Abundance: 96.94%;
Jn: 0+;
Decay: 2ε;
t1/2: 9.4608E+28s ≈ 3.000000e+21 y;

Calcium radioactive isotope number 2: 46Ca
Neutrons: 26;
Abundance: 0.004%;
Jn: 0+;
Decay: 2β -;
t1/2: 8.83008E+22s ≈ 2.800000e+15 y;

Calcium radioactive isotope number 3: 48Ca
Neutrons: 28;
Abundance: 0.187%;
Jn: 0+;
Decay: 2β - : 84.00 %
β - < 25.00 %;
t1/2: 7.25328E+26s ≈ 2.300000e+19 y;

Artificial Radioactive isotopes


Calcium radioactive isotope number 1: 34Ca
Neutrons: 14;
Jn: 0+;
Decay: p;
t1/2: 3.5E-08s ≈ 35.00 ns;

Calcium radioactive isotope number 2: 35Ca
Neutrons: 15;
Jn: Unknown;
Decay: ε : 100.00 %
ε p : 95.70 %
ε 2p : 4.20 %;
t1/2: 0.0257s ≈ 25.70 ms;

Calcium radioactive isotope number 3: 36Ca
Neutrons: 16;
Jn: 0+;
Decay: ε : 100.00 %
ε p : 57.00 %;
t1/2: 0.102s ;

Calcium radioactive isotope number 4: 37Ca
Neutrons: 17;
Jn: 3/2+;
Decay: ε : 100.00 %
ε p : 82.10 %;
t1/2: 0.1811s ;

Calcium radioactive isotope number 5: 38Ca
Neutrons: 18;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 0.44s ;

Calcium radioactive isotope number 6: 39Ca
Neutrons: 19;
Jn: 3/2+;
Decay: ε : 100.00 %;
t1/2: 0.8596s ;

Calcium radioactive isotope number 7: 41Ca
Neutrons: 21;
Jn: 7/2-;
Decay: ε : 100.00 %;
t1/2: 3.216672E+12s ≈ 1.020000e+5 y;

Calcium radioactive isotope number 8: 45Ca
Neutrons: 25;
Jn: 7/2-;
Decay: β - : 100.00 %;
t1/2: 14049500s ≈ 162.61 d;

Calcium radioactive isotope number 9: 47Ca
Neutrons: 27;
Jn: 7/2-;
Decay: β - : 100.00 %;
t1/2: 391910.4s ≈ 4.54 d;

Calcium radioactive isotope number 10: 49Ca
Neutrons: 29;
Jn: 3/2-;
Decay: β - : 100.00 %;
t1/2: 523.08s ≈ 8.72 m;

Calcium radioactive isotope number 11: 50Ca
Neutrons: 30;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 13.9s ;

Calcium radioactive isotope number 12: 51Ca
Neutrons: 31;
Jn: 3/2-;
Decay: β - : 100.00 %
β -n;
t1/2: 10s ;

Calcium radioactive isotope number 13: 52Ca
Neutrons: 32;
Jn: 0+;
Decay: β - : 100.00 %
β -n ≤ 2.00 %;
t1/2: 4.6s ;

Calcium radioactive isotope number 14: 53Ca
Neutrons: 33;
Jn: 3/2-,5/2-;
Decay: β - : 100.00 %
β -n > 30.00 %;
t1/2: 0.09s ≈ 90.00 ms;

Calcium radioactive isotope number 15: 54Ca
Neutrons: 34;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 3E-07s ≈ 0.30 µs;

Calcium radioactive isotope number 16: 55Ca
Neutrons: 35;
Jn: Unknown;
Decay: β - ?;
t1/2: 3E-07s ≈ 0.30 µs;

Calcium radioactive isotope number 17: 56Ca
Neutrons: 36;
Jn: 0+;
Decay: β - ?;
t1/2: 0.01s ≈ 10.00 ms;

Calcium radioactive isotope number 18: 57Ca
Neutrons: 37;
Jn: Unknown;
Decay: β -n ?
β - ?;
t1/2: 0.005s ≈ 5.00 ms;

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