Isotopes of the Element Calcium
[Click for Main Data]

Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.

Isotopes of the Element Calcium with a Known Natural Abundance

All Known Isotopes of the Element Calcium

Mass Number	Half-life	Decay Mode	Branching Percentage

34	< 35 nanoseconds	Proton Emission	No Data Available

35	25.7 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	95.70

		Electron Capture with delayed Double Proton Emission	4.20

36	102 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	57.00

37	181.1 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	82.10

38	440 milliseconds	Electron Capture	100.00

39	859.6 milliseconds	Electron Capture	100.00

40	Stable	-	-

41	1.02×10⁺⁵ years	Electron Capture	100.00

42	Stable	-	-

43	Stable	-	-

44	Stable	-	-

45	162.61 days	Beta-minus Decay	100.00

46	> 0.28×10⁺¹⁶ years	Double Beta-minus Decay	No Data Available

47	4.536 days	Beta-minus Decay	100.00

48	> 4×10⁺¹⁹ years	Double Beta-minus Decay	No Data Available

49	8.718 minutes	Beta-minus Decay	100.00

50	13.9 seconds	Beta-minus Decay	100.00

51	10.0 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	No Data Available

52	4.6 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	<= 2.00

53	90 milliseconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	> 30.00

54	No Data Available	Beta-minus Decay	100.00

56	10 milliseconds	Beta-minus Decay	No Data Available

This page is maintained by Steve Gagnon.

Isotopes of the Element Calcium[Click for Main Data]