Isotopes of Calcium
Notable Isotopes
40
Ca
[20 neutrons]
Abundance:
96.941%
Stable with 20 neutrons
41
Ca
[21 neutrons]
Abundance:
synthetic
Half life:
1.03 x 10
5
years [
Electron Capture
]
Decay Energy:
?
MeV
Decays to
41
K
.
42
Ca
[22 neutrons]
Abundance:
0.647%
Stable with 22 neutrons
43
Ca
[23 neutrons]
Abundance:
0.135%
Stable with 23 neutrons
44
Ca
[24 neutrons]
Abundance:
2.086%
Stable with 24 neutrons
45
Ca
[25 neutrons]
Abundance:
synthetic
Half life:
162.7 days [
beta
-
]
Decay Energy:
0.258
MeV
Decays to
45
Sc
.
46
Ca
[26 neutrons]
Abundance:
0.004%
Half life:
2.8 x 10
15
years [
Double beta decay
]
Decay Energy:
?
MeV
Decays to
46
Ti
.
47
Ca
[27 neutrons]
Abundance:
synthetic
Half life:
4.536 days [
beta
-
]
Decay Energy:
0.694, 1.99
MeV
Decays to
47
Sc
.
Half life:
4.536 days [
Gamma Radiation
]
Decay Energy:
1.297
MeV
Decays to ?.
48
Ca
[28 neutrons]
Abundance:
0.187
Half life:
4 x 10
19
years [
Double beta decay
]
Decay Energy:
?
MeV
Decays to
48
Ti
.