Isotopes of Calcium

List of known isotopes of the element Calcium.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
³⁴Ca	35 ns	syn.	0+	—	3.401·10⁷ ±322 keV/c²	—
³⁵Ca	25.7 ±2 ms	syn.	(1/2+)	—	3.5·10⁷ ±215 keV/c²	1985
³⁶Ca	101.2 ±20 ms	syn.	0+	—	3.599·10⁷ ±42.94 keV/c²	1977
³⁷Ca	181.1 ±10 ms	syn.	(3/2+)	—	3.698·10⁷ ±0.68 keV/c²	1964
³⁸Ca	443.7 ±35 ms	syn.	0+	—	3.797·10⁷ ±0.208 keV/c²	1966
³⁹Ca	860.3 ±10 ms	syn.	3/2+	3.459 ±0.0025 fm	3.897·10⁷ ±0.64 keV/c²	1943
⁴⁰Ca	stab.	96.94 ±0.156 %	0+	3.477 ±0.0019 fm	3.996·10⁷ ±0.022 keV/c²	1922
⁴¹Ca	99,400 ±15 a	syn.	7/2-	3.478 ±0.0019 fm	4.096·10⁷ ±0.147 keV/c²	1939
⁴²Ca	stab.	0.647 ±0.023 %	0+	3.508 ±0.0021 fm	4.195·10⁷ ±0.159 keV/c²	1934
⁴³Ca	stab.	0.135 ±0.01 %	7/2-	3.495 ±0.0019 fm	4.295·10⁷ ±0.244 keV/c²	1934
⁴⁴Ca	stab.	2.086 ±0.11 %	0+	3.517 ±0.0021 fm	4.395·10⁷ ±0.348 keV/c²	1922
⁴⁵Ca	162.6 ±9 d	syn.	7/2-	3.494 ±0.0021 fm	4.495·10⁷ ±0.392 keV/c²	1940
⁴⁶Ca	stab.	0.004 ±0.003 %	0+	3.495 ±0.002 fm	4.595·10⁷ ±2.398 keV/c²	1938
⁴⁷Ca	4.536 ±3 d	syn.	7/2-	3.478 ±0.0024 fm	4.695·10⁷ ±2.384 keV/c²	1951
⁴⁸Ca	2.9·10¹⁹ ± a	0.187 ±0.021 %	0+	3.477 ±0.002 fm	4.795·10⁷ ±0.018 keV/c²	1938
⁴⁹Ca	8.718 ±6 m	syn.	3/2-	—	4.895·10⁷ ±0.19 keV/c²	1950
⁵⁰Ca	13.45 ±5 s	syn.	0+	3.516 ±0.0064 fm	4.995·10⁷ ±1.7 keV/c²	1964
⁵¹Ca	10 ±8 s	syn.	3/2(-)	—	5.096·10⁷ ±0.56 keV/c²	1980
⁵²Ca	4.6 ±3 s	syn.	0+	—	5.196·10⁷ ±0.72 keV/c²	1985
⁵³Ca	461 ±90 ms	syn.	(1/2-)	—	5.296·10⁷ ±47 keV/c²	1983
⁵⁴Ca	107 ±14 ms	syn.	0+	—	5.397·10⁷ ±52 keV/c²	1997
⁵⁵Ca	22 ±2 ms	syn.	(5/2-)	—	5.497·10⁷ ±172 keV/c²	1997
⁵⁶Ca	11 ±2 ms	syn.	0+	—	5.598·10⁷ ±268 keV/c²	1997
⁵⁷Ca	620 ns	syn.	—	—	5.699·10⁷ ±429 keV/c²	2009
⁵⁸Ca	620 ns	syn.	0+	—	5.799·10⁷ ±537 keV/c²	2009

34CaCalcium-34

Classification	z: 20; n: 14; m: 34
Half life	35 ns
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	proton emission; two-proton emission
Mass excess	14,890 ±300 keV
Binding energy	7,173 ±9 keV
Single-particle energy	-61 ±361 keV
Neutron separation energy	24,210 ±500 keV
Q value for electron capture	16,110 ±358.3 keV

Point at nuclide Decay chain of Calcium-34

35CaCalcium-35

Classification	z: 20; n: 15; m: 35
Half life	25.7 ±2 ms
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	electron capture + β⁺ decay; electron capture + proton emission; electron capture with two-proton emission
Discovery	1985
Mass excess	5,190 ±200 keV
Binding energy	7,476 ±6 keV
Single-particle energy	878 ±280 keV
Neutron separation energy	17,770 ±361 keV
Q value for electron capture	16,360 ±200 keV
β⁻ decay energy	-21,910 ±447 keV

Point at nuclide Decay chain of Calcium-35

36CaCalcium-36

Classification	z: 20; n: 16; m: 36
Half life	101.2 ±20 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1977
Mass excess	-6,452 ±40 keV
Binding energy	7,815 ±1.111 keV
Single-particle energy	2,567 ±40 keV
Neutron separation energy	19,710 ±204 keV
Q value for electron capture	10,960 ±40 keV
β⁻ decay energy	-22,610 ±303 keV
β⁻ decay energy with neutron	-41,630 ±402 keV

Point at nuclide Decay chain of Calcium-36

37CaCalcium-37

Classification	z: 20; n: 17; m: 37
Half life	181.1 ±10 ms
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1964
Mass excess	-13,140 ±0.634 keV
Binding energy	8,003 ±0.0171 keV
Single-particle energy	3,007 ±0.7128 keV
Neutron separation energy	14,750 ±40 keV
Q value for electron capture	11,660 ±0.641 keV
β⁻ decay energy	-16,920 ±300 keV
β⁻ decay energy with neutron	-37,360 ±300 keV

Point at nuclide Decay chain of Calcium-37

38CaCalcium-38

Classification	z: 20; n: 18; m: 38
Half life	443.7 ±35 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	electron capture + β⁺ decay
Discovery	1966
Mass excess	-22,060 ±0.194 keV
Binding energy	8,240 ±0.0051 keV
Single-particle energy	4,547 ±0.2159 keV
Neutron separation energy	16,990 ±0.6634 keV
Q value for electron capture	6,742 ±0.275 keV
β⁻ decay energy	-17,810 ±200 keV
β⁻ decay energy with neutron	-33,910 ±300 keV

Point at nuclide Decay chain of Calcium-38

39CaCalcium-39

Classification	z: 20; n: 19; m: 39
Half life	860.3 ±10 ms
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	electron capture + β⁺ decay
Discovery	1943
Mass excess	-27,290 ±0.596 keV
Binding energy	8,369 ±0.0153 keV
Single-particle energy	5,770 ±0.6273 keV
Neutron separation energy	13,290 ±0.6271 keV
Q value for electron capture	6,524 ±0.596 keV
β⁻ decay energy	-13,110 ±24 keV
β⁻ decay energy with neutron	-31,110 ±200 keV
Magnetic dipole moment	1.021 ±1.6·10^-4 μN
Electric quadrupole moment	0.038 ±0.003 b

Point at nuclide Decay chain of Calcium-39

40CaCalcium-40

Classification	z: 20; n: 20; m: 40
Half life	stable nuclide
Natural abundance	96.94 ±0.156 %
Spin/parity	0+
Discovery	1922
Mass excess	-34,850 ±0.02 keV
Binding energy	8,551 ±5.999·10^-4 keV
Single-particle energy	8,328 ±0.021 keV
Neutron separation energy	15,630 ±0.5965 keV
Q value for electron capture	-1,311 ±0.059 keV
β⁻ decay energy	-14,330 ±2.828 keV
β⁻ decay energy with neutron	-28,750 ±24 keV
Magnetic dipole moment	1.6 ±0.3 μN

Point at nuclide

41CaCalcium-41

Classification	z: 20; n: 21; m: 41
Half life	99,400 ±15 a
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	electron capture (EC)
Discovery	1939
Mass excess	-35,140 ±0.138 keV
Binding energy	8,546 ±0.0034 keV
Single-particle energy	8,891 ±0.1486 keV
Neutron separation energy	8,362 ±0.1362 keV
Q value for electron capture	421.6 ±0.138 keV
β⁻ decay energy	-6,496 ±0.1553 keV
β⁻ decay energy with neutron	-22,690 ±2.831 keV
Magnetic dipole moment	-1.595 ±6.999·10^-5 μN
Electric quadrupole moment	-0.0665 ±0.0018 b

Point at nuclide Decay chain of Calcium-41

42CaCalcium-42

Classification	z: 20; n: 22; m: 42
Half life	stable nuclide
Natural abundance	0.647 ±0.023 %
Spin/parity	0+
Discovery	1934
Mass excess	-38,550 ±0.148 keV
Binding energy	8,616 ±0.0035 keV
Single-particle energy	10,270 ±0.1485 keV
Neutron separation energy	11,480 ±0.0556 keV
Q value for electron capture	-3,526 ±0.182 keV
β⁻ decay energy	-6,427 ±0.0485 keV
β⁻ decay energy with neutron	-17,980 ±0.1579 keV
Magnetic dipole moment	0.08 ±0.12 μN
Electric quadrupole moment	-0.19 ±0.08 b

Point at nuclide

43CaCalcium-43

Classification	z: 20; n: 23; m: 43
Half life	stable nuclide
Natural abundance	0.135 ±0.01 %
Spin/parity	7/2-
Discovery	1934
Mass excess	-38,410 ±0.227 keV
Binding energy	8,600 ±0.0053 keV
Single-particle energy	10,670 ±0.2509 keV
Neutron separation energy	7,932 ±0.1731 keV
Q value for electron capture	-1,834 ±0.469 keV
β⁻ decay energy	-2,221 ±1.865 keV
β⁻ decay energy with neutron	-14,360 ±0.1797 keV
Magnetic dipole moment	-1.318 ±6·10^-5 μN
Electric quadrupole moment	-0.0408 ±8·10^-4 b

Point at nuclide

44CaCalcium-44

Classification	z: 20; n: 24; m: 44
Half life	stable nuclide
Natural abundance	2.086 ±0.11 %
Spin/parity	0+
Discovery	1922
Mass excess	-41,470 ±0.325 keV
Binding energy	8,658 ±0.0074 keV
Single-particle energy	12,180 ±0.5229 keV
Neutron separation energy	11,130 ±0.2345 keV
Q value for electron capture	-5,688 ±0.53 keV
β⁻ decay energy	-3,653 ±1.756 keV
β⁻ decay energy with neutron	-13,360 ±1.879 keV

Point at nuclide

45CaCalcium-45

Classification	z: 20; n: 25; m: 45
Half life	162.6 ±9 d
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	β⁻ decay
Discovery	1940
Mass excess	-40,820 ±0.365 keV
Binding energy	8,630 ±0.0081 keV
Single-particle energy	12,310 ±0.5561 keV
Neutron separation energy	7,414 ±0.1715 keV
Q value for electron capture	-4,197 ±0.637 keV
β⁻ decay energy	260 ±0.7377 keV
β⁻ decay energy with neutron	-11,070 ±1.764 keV
Magnetic dipole moment	-1.327 ±0.0013 μN
Electric quadrupole moment	0.038 ±0.012 b

Point at nuclide Decay chain of Calcium-45

46CaCalcium-46

Classification	z: 20; n: 26; m: 46
Half life	stable nuclide
Natural abundance	0.004 ±0.003 %
Spin/parity	0+
Discovery	1938
Mass excess	-43,140 ±2.234 keV
Binding energy	8,668 ±0.0486 keV
Single-particle energy	13,810 ±2.293 keV
Neutron separation energy	10,390 ±2.263 keV
Q value for electron capture	-7,726 ±2.349 keV
β⁻ decay energy	-1,378 ±2.33 keV
β⁻ decay energy with neutron	-10,140 ±2.328 keV

Point at nuclide

47CaCalcium-47

Classification	z: 20; n: 27; m: 47
Half life	4.536 ±3 d
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	β⁻ decay
Discovery	1951
Mass excess	-42,350 ±2.221 keV
Binding energy	8,639 ±0.0473 keV
Single-particle energy	14,210 ±2.336 keV
Neutron separation energy	7,276 ±0.2682 keV
Q value for electron capture	-6,633 ±2.624 keV
β⁻ decay energy	1,992 ±1.184 keV
β⁻ decay energy with neutron	-8,655 ±2.318 keV
Magnetic dipole moment	-1.407 ±0.0011 μN
Electric quadrupole moment	0.084 ±0.006 b

Point at nuclide Decay chain of Calcium-47

48CaCalcium-48

Classification	z: 20; n: 28; m: 48
Half life	2.9·10¹⁹ ± a
Natural abundance	0.187 ±0.021 %
Spin/parity	0+
Decay modes	double β⁻ decay; double β⁻ decay; β⁻ decay
Discovery	1938
Mass excess	-44,230 ±0.018 keV
Binding energy	8,666 ±4·10^-4 keV
Single-particle energy	15,800 ±1.397 keV
Neutron separation energy	9,951 ±2.22 keV
Q value for electron capture	-11,950 ±0.773 keV
β⁻ decay energy	279.2 ±4.949 keV
β⁻ decay energy with neutron	-7,960 ±1.93 keV

Point at nuclide Decay chain of Calcium-48

49CaCalcium-49

Classification	z: 20; n: 29; m: 49
Half life	8.718 ±6 m
Natural abundance	synthetic nuclide
Spin/parity	3/2-
Decay modes	β⁻ decay
Discovery	1950
Mass excess	-41,310 ±0.178 keV
Binding energy	8,594 ±0.0036 keV
Single-particle energy	16,300 ±0.7933 keV
Neutron separation energy	5,146 ±0.1766 keV
Q value for electron capture	-11,690 ±0.821 keV
β⁻ decay energy	5,262 ±2.274 keV
β⁻ decay energy with neutron	-4,868 ±4.953 keV
Magnetic dipole moment	-1.38 ±8·10^-4 μN
Electric quadrupole moment	-0.036 ±0.003 b

Point at nuclide Decay chain of Calcium-49

50CaCalcium-50

Classification	z: 20; n: 30; m: 50
Half life	13.45 ±5 s
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay
Discovery	1964
Mass excess	-39,590 ±1.584 keV
Binding energy	8,550 ±0.0317 keV
Single-particle energy	17,260 ±1.774 keV
Neutron separation energy	6,360 ±1.593 keV
Q value for electron capture	-13,870 ±7.892 keV
β⁻ decay energy	4,947 ±2.972 keV
β⁻ decay energy with neutron	-1,099 ±2.765 keV

Point at nuclide Decay chain of Calcium-50

51CaCalcium-51

Classification	z: 20; n: 31; m: 51
Half life	10 ±8 s
Natural abundance	synthetic nuclide
Spin/parity	3/2(-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1980
Mass excess	-36,340 ±0.522 keV
Binding energy	8,476 ±0.0102 keV
Single-particle energy	17,890 ±7.749 keV
Neutron separation energy	4,814 ±1.667 keV
Q value for electron capture	-13,820 ±13.05 keV
β⁻ decay energy	6,918 ±2.568 keV
β⁻ decay energy with neutron	133.4 ±2.568 keV
Magnetic dipole moment	-1.05 ±0.0011 μN
Electric quadrupole moment	0.036 ±0.012 b

Point at nuclide Decay chain of Calcium-51

52CaCalcium-52

Classification	z: 20; n: 32; m: 52
Half life	4.6 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1985
Mass excess	-34,270 ±0.671 keV
Binding energy	8,429 ±0.0129 keV
Single-particle energy	19,030 ±13.05 keV
Neutron separation energy	6,005 ±0.8497 keV
Q value for electron capture	-17,130 ±33.54 keV
β⁻ decay energy	6,257 ±3.146 keV
β⁻ decay energy with neutron	912.7 ±2.602 keV

Point at nuclide Decay chain of Calcium-52

53CaCalcium-53

Classification	z: 20; n: 33; m: 53
Half life	461 ±90 ms
Natural abundance	synthetic nuclide
Spin/parity	(1/2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1983
Mass excess	-29,390 ±43.78 keV
Binding energy	8,330 ±0.826 keV
Single-particle energy	19,530 ±55.14 keV
Neutron separation energy	3,192 ±43.78 keV
Q value for electron capture	-17,100 ±120 keV
β⁻ decay energy	9,381 ±47.22 keV
β⁻ decay energy with neutron	3,064 ±43.88 keV

Point at nuclide Decay chain of Calcium-53

54CaCalcium-54

Classification	z: 20; n: 34; m: 54
Half life	107 ±14 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with two-neutron emission; β⁻ decay with neutron emission
Discovery	1997
Mass excess	-25,170 ±48.43 keV
Binding energy	8,247 ±0.897 keV
Single-particle energy	20,150 ±121.8 keV
Neutron separation energy	3,844 ±65.29 keV
Q value for electron capture	-20,020 ±402.9 keV
β⁻ decay energy	9,277 ±50.41 keV
β⁻ decay energy with neutron	5,537 ±51.56 keV

Point at nuclide Decay chain of Calcium-54

55CaCalcium-55

Classification	z: 20; n: 35; m: 55
Half life	22 ±2 ms
Natural abundance	synthetic nuclide
Spin/parity	(5/2-)
Decay modes	β⁻ decay; β⁻ decay with two-neutron emission; β⁻ decay with neutron emission
Discovery	1997
Mass excess	-18,660 ±160.2 keV
Binding energy	8,125 ±2.913 keV
Single-particle energy	20,780 ±431 keV
Neutron separation energy	1,561 ±167.3 keV
Q value for electron capture	-19,130 ±525 keV
β⁻ decay energy	12,190 ±171.9 keV
β⁻ decay energy with neutron	7,716 ±160.8 keV

Point at nuclide Decay chain of Calcium-55

56CaCalcium-56

Classification	z: 20; n: 36; m: 56
Half life	11 ±2 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with three-neutron emission
Discovery	1997
Mass excess	-13,520 ±249.6 keV
Binding energy	8,033 ±4.457 keV
Single-particle energy	21,270 ±559 keV
Neutron separation energy	2,931 ±296.6 keV
Q value for electron capture	-21,500 ±649.8 keV
β⁻ decay energy	12,000 ±360.2 keV
β⁻ decay energy with neutron	9,260 ±257.3 keV

Point at nuclide Decay chain of Calcium-56

57CaCalcium-57

Classification	z: 20; n: 37; m: 57
Half life	620 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay with two-neutron emission; β⁻ decay with neutron emission; β⁻ decay
Discovery	2009
Mass excess	-6,560 ±400 keV
Binding energy	7,912 ±7 keV
Single-particle energy	21,820 ±721 keV
Neutron separation energy	1,121 ±471 keV
β⁻ decay energy	14,820 ±438 keV
β⁻ decay energy with neutron	10,880 ±477 keV

Point at nuclide Decay chain of Calcium-57

58CaCalcium-58

Classification	z: 20; n: 38; m: 58
Half life	620 ns
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay with neutron emission; β⁻ decay
Discovery	2009
Mass excess	-1,530 ±500 keV
Binding energy	7,828 ±9 keV
Single-particle energy	22,940 ±781 keV
Neutron separation energy	3,042 ±640 keV
β⁻ decay energy	13,940 ±535 keV
β⁻ decay energy with neutron	11,770 ±532 keV

Point at nuclide Decay chain of Calcium-58

Isotopes of Calcium

34CaCalcium-34ads_clickcall_splitdownload

35CaCalcium-35ads_clickcall_splitdownload

36CaCalcium-36ads_clickcall_splitdownload

37CaCalcium-37ads_clickcall_splitdownload

38CaCalcium-38ads_clickcall_splitdownload

39CaCalcium-39ads_clickcall_splitdownload

40CaCalcium-40ads_clickdownload

41CaCalcium-41ads_clickcall_splitdownload

42CaCalcium-42ads_clickdownload

43CaCalcium-43ads_clickdownload

44CaCalcium-44ads_clickdownload

45CaCalcium-45ads_clickcall_splitdownload

46CaCalcium-46ads_clickdownload

47CaCalcium-47ads_clickcall_splitdownload

48CaCalcium-48ads_clickcall_splitdownload

49CaCalcium-49ads_clickcall_splitdownload

50CaCalcium-50ads_clickcall_splitdownload

51CaCalcium-51ads_clickcall_splitdownload

52CaCalcium-52ads_clickcall_splitdownload

53CaCalcium-53ads_clickcall_splitdownload

54CaCalcium-54ads_clickcall_splitdownload

55CaCalcium-55ads_clickcall_splitdownload

56CaCalcium-56ads_clickcall_splitdownload

57CaCalcium-57ads_clickcall_splitdownload

58CaCalcium-58ads_clickcall_splitdownload

34CaCalcium-34

35CaCalcium-35

36CaCalcium-36

37CaCalcium-37

38CaCalcium-38

39CaCalcium-39

40CaCalcium-40

41CaCalcium-41

42CaCalcium-42

43CaCalcium-43

44CaCalcium-44

45CaCalcium-45

46CaCalcium-46

47CaCalcium-47

48CaCalcium-48

49CaCalcium-49

50CaCalcium-50

51CaCalcium-51

52CaCalcium-52

53CaCalcium-53

54CaCalcium-54

55CaCalcium-55

56CaCalcium-56

57CaCalcium-57

58CaCalcium-58