Isotopes of Cobalt

List of known isotopes of the element Cobalt.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
⁴⁸Co	stab.	syn.	—	—	4.8·10⁷ ±537 keV/c²	—
⁵⁰Co	38.8 ±2 ms	syn.	(6+)	—	4.998·10⁷ ±135 keV/c²	1987
⁵¹Co	68.8 ±19 ms	syn.	7/2-	—	5.097·10⁷ ±52 keV/c²	1987
⁵²Co	104 ±7 ms	syn.	(6+)	—	5.196·10⁷ ±5.669 keV/c²	1987
⁵³Co	240 ±9 ms	syn.	(7/2-)	—	5.295·10⁷ ±1.854 keV/c²	1970
⁵⁴Co	193.2 ±7 ms	syn.	0+	—	5.394·10⁷ ±0.38 keV/c²	1952
⁵⁵Co	17.53 ±3 h	syn.	7/2-	—	5.494·10⁷ ±0.434 keV/c²	1938
⁵⁶Co	77.23 ±26 d	syn.	4+	—	5.593·10⁷ ±0.51 keV/c²	1941
⁵⁷Co	271.7 ±6 d	syn.	7/2-	—	5.693·10⁷ ±0.553 keV/c²	1941
⁵⁸Co	70.86 ±6 d	syn.	2+	—	5.793·10⁷ ±1.237 keV/c²	1941
⁵⁹Co	stab.	100 %	7/2-	3.787 ±0.0021 fm	5.893·10⁷ ±0.426 keV/c²	1923
⁶⁰Co	1,925 ±14 d	syn.	5+	—	5.993·10⁷ ±0.433 keV/c²	1941
⁶¹Co	1.649 ±5 h	syn.	7/2-	—	6.093·10⁷ ±0.901 keV/c²	1947
⁶²Co	1.54 ±10 m	syn.	(2)+	—	6.193·10⁷ ±19.94 keV/c²	1949
⁶³Co	27.4 ±5 s	syn.	7/2-	—	6.293·10⁷ ±19.94 keV/c²	1960
⁶⁴Co	0.3 ±3 s	syn.	1+	—	6.393·10⁷ ±21.47 keV/c²	1969
⁶⁵Co	1.16 ±3 s	syn.	(7/2)-	—	6.493·10⁷ ±2.235 keV/c²	1978
⁶⁶Co	0.2 ±2 s	syn.	(3+)	—	6.593·10⁷ ±15 keV/c²	1985
⁶⁷Co	0.425 ±20 s	syn.	(7/2-)	—	6.694·10⁷ ±6.917 keV/c²	1985
⁶⁸Co	0.2 ±2 s	syn.	(7-)	—	6.794·10⁷ ±4.142 keV/c²	1985
⁶⁹Co	227 ±11 ms	syn.	(7/2-)	—	6.894·10⁷ ±92 keV/c²	1985
⁷⁰Co	112 ±7 ms	syn.	(6- 7-)	—	6.995·10⁷ ±11.8 keV/c²	1998
⁷¹Co	80 ±3 ms	syn.	(7/2-)	—	7.095·10⁷ ±499.2 keV/c²	1992
⁷²Co	59.9 ±17 ms	syn.	^{6- 7-}	—	7.195·10⁷ ±322 keV/c²	1992
⁷³Co	40.7 ±13 ms	syn.	—	—	7.295·10⁷ ±322 keV/c²	1995
⁷⁴Co	31.3 ±15 ms	syn.	—	—	7.396·10⁷ ±429 keV/c²	1995
⁷⁵Co	30 ±11 ms	syn.	—	—	7.496·10⁷ ±429 keV/c²	1995
⁷⁶Co	21.7 ± ms	syn.	—	—	7.597·10⁷ ±537 keV/c²	2010
⁷⁷Co	13 ± ms	syn.	—	—	7.697·10⁷ ±644 keV/c²	2014
⁷⁸Co	stab.	syn.	—	—	7.798·10⁷ ±751 keV/c²	2017

48CoCobalt-48

Classification	z: 27; n: 21; m: 48
Half life	stable nuclide
Natural abundance	synthetic nuclide
Mass excess	1,730 ±500 keV
Binding energy	7,595 ±10 keV
Single-particle energy	-1,570 ±707 keV
Neutron separation energy	16,960 ±781 keV
Q value for electron capture	19,730 ±508.4 keV
β⁻ decay energy	-16,450 ±656 keV

Point at nuclide

50CoCobalt-50

Classification	z: 27; n: 23; m: 50
Half life	38.8 ±2 ms
Natural abundance	synthetic nuclide
Spin/parity	(6+)
Decay modes	electron capture + β⁺ decay; electron capture + proton emission; electron capture with two-proton emission
Discovery	1987
Mass excess	-17,590 ±125.7 keV
Binding energy	8,000 ±2.515 keV
Single-particle energy	127.6 ±128 keV
Neutron separation energy	15,880 ±516 keV
Q value for electron capture	16,880 ±126 keV
β⁻ decay energy	-14,130 ±516 keV
β⁻ decay energy with neutron	-34,190 ±613 keV

Point at nuclide Decay chain of Cobalt-50

51CoCobalt-51

Classification	z: 27; n: 24; m: 51
Half life	68.8 ±19 ms
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1987
Mass excess	-27,350 ±48.43 keV
Binding energy	8,193 ±0.9498 keV
Single-particle energy	154.6 ±49.15 keV
Neutron separation energy	17,820 ±134.7 keV
Q value for electron capture	12,840 ±48.45 keV
β⁻ decay energy	-15,700 ±503 keV
β⁻ decay energy with neutron	-31,960 ±503 keV

Point at nuclide Decay chain of Cobalt-51

52CoCobalt-52

Classification	z: 27; n: 25; m: 52
Half life	104 ±7 ms
Natural abundance	synthetic nuclide
Spin/parity	(6+)
Decay modes	electron capture + β⁺ decay; β⁺ decay + proton emission
Discovery	1987
Mass excess	-34,350 ±5.282 keV
Binding energy	8,325 ±0.1016 keV
Single-particle energy	1,443 ±5.463 keV
Neutron separation energy	15,070 ±48.72 keV
Q value for electron capture	13,980 ±5.285 keV
β⁻ decay energy	-11,790 ±83.07 keV
β⁻ decay energy with neutron	-30,770 ±500 keV

Point at nuclide Decay chain of Cobalt-52

53CoCobalt-53

Classification	z: 27; n: 26; m: 53
Half life	240 ±9 ms
Natural abundance	synthetic nuclide
Spin/parity	(7/2-)
Decay modes	electron capture + β⁺ decay
Discovery	1970
Mass excess	-42,660 ±1.727 keV
Binding energy	8,477 ±0.0326 keV
Single-particle energy	1,616 ±1.733 keV
Neutron separation energy	16,380 ±5.556 keV
Q value for electron capture	8,288 ±2.402 keV
β⁻ decay energy	-13,030 ±25.2 keV
β⁻ decay energy with neutron	-28,180 ±82.92 keV

Point at nuclide Decay chain of Cobalt-53

54CoCobalt-54

Classification	z: 27; n: 27; m: 54
Half life	193.2 ±7 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	electron capture + β⁺ decay
Discovery	1952
Mass excess	-48,020 ±0.355 keV
Binding energy	8,569 ±0.0066 keV
Single-particle energy	4,351 ±1.636 keV
Neutron separation energy	13,420 ±1.695 keV
Q value for electron capture	8,244 ±0.494 keV
β⁻ decay energy	-8,732 ±4.671 keV
β⁻ decay energy with neutron	-26,460 ±25.15 keV

Point at nuclide Decay chain of Cobalt-54

55CoCobalt-55

Classification	z: 27; n: 28; m: 55
Half life	17.53 ±3 h
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	electron capture + β⁺ decay
Discovery	1938
Mass excess	-54,030 ±0.405 keV
Binding energy	8,669 ±0.0074 keV
Single-particle energy	5,064 ±0.2981 keV
Neutron separation energy	14,090 ±0.3112 keV
Q value for electron capture	3,451 ±0.509 keV
β⁻ decay energy	-8,695 ±0.5775 keV
β⁻ decay energy with neutron	-22,830 ±4.675 keV
Magnetic dipole moment	4.822 ±0.003 μN

Point at nuclide Decay chain of Cobalt-55

56CoCobalt-56

Classification	z: 27; n: 29; m: 56
Half life	77.23 ±26 d
Natural abundance	synthetic nuclide
Spin/parity	4+
Decay modes	electron capture + β⁺ decay
Discovery	1941
Mass excess	-56,050 ±0.475 keV
Binding energy	8,694 ±0.0085 keV
Single-particle energy	5,848 ±0.4483 keV
Neutron separation energy	10,080 ±0.4635 keV
Q value for electron capture	4,566 ±0.545 keV
β⁻ decay energy	-2,133 ±0.3735 keV
β⁻ decay energy with neutron	-18,780 ±0.7405 keV
Electric quadrupole moment	0.25 ±0.09 b

Point at nuclide Decay chain of Cobalt-56

57CoCobalt-57

Classification	z: 27; n: 30; m: 57
Half life	271.7 ±6 d
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	electron capture (EC)
Discovery	1941
Mass excess	-59,350 ±0.516 keV
Binding energy	8,741 ±0.009 keV
Single-particle energy	6,027 ±0.4491 keV
Neutron separation energy	11,370 ±0.5657 keV
Q value for electron capture	836.3 ±0.581 keV
β⁻ decay energy	-3,262 ±0.6417 keV
β⁻ decay energy with neutron	-13,510 ±0.5241 keV
Electric quadrupole moment	0.54 ±0.1 b

Point at nuclide Decay chain of Cobalt-57

58CoCobalt-58

Classification	z: 27; n: 31; m: 58
Half life	70.86 ±6 d
Natural abundance	synthetic nuclide
Spin/parity	2+
Decay modes	electron capture + β⁺ decay
Discovery	1941
Mass excess	-59,850 ±1.153 keV
Binding energy	8,738 ±0.0199 keV
Single-particle energy	6,954 ±1.126 keV
Neutron separation energy	8,572 ±1.176 keV
Q value for electron capture	2,307 ±1.196 keV
β⁻ decay energy	381.5 ±1.107 keV
β⁻ decay energy with neutron	-11,840 ±1.21 keV
Electric quadrupole moment	0.23 ±0.03 b

Point at nuclide Decay chain of Cobalt-58

59CoCobalt-59

Classification	z: 27; n: 32; m: 59
Half life	stable nuclide
Natural abundance	100 %
Spin/parity	7/2-
Discovery	1923
Mass excess	-62,230 ±0.397 keV
Binding energy	8,768 ±0.0067 keV
Single-particle energy	7,363 ±0.3543 keV
Neutron separation energy	10,450 ±1.102 keV
Q value for electron capture	-1,565 ±0.516 keV
β⁻ decay energy	-1,074 ±0.1944 keV
β⁻ decay energy with neutron	-10,080 ±0.2004 keV
Magnetic dipole moment	4.615 ±0.025 μN
Electric quadrupole moment	0.42 ±0.03 b

Point at nuclide

60CoCobalt-60

Classification	z: 27; n: 33; m: 60
Half life	1,925 ±14 d
Natural abundance	synthetic nuclide
Spin/parity	5+
Decay modes	β⁻ decay
Discovery	1941
Mass excess	-61,660 ±0.403 keV
Binding energy	8,746 ±0.0067 keV
Single-particle energy	8,274 ±0.3756 keV
Neutron separation energy	7,491 ±0.0706 keV
Q value for electron capture	-237.3 ±3.43 keV
β⁻ decay energy	2,822 ±0.2124 keV
β⁻ decay energy with neutron	-8,565 ±0.2068 keV
Magnetic dipole moment	3.799 ±0.008 μN
Electric quadrupole moment	0.46 ±0.06 b

Point at nuclide Decay chain of Cobalt-60

61CoCobalt-61

Classification	z: 27; n: 34; m: 61
Half life	1.649 ±5 h
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	β⁻ decay
Discovery	1947
Mass excess	-62,900 ±0.839 keV
Binding energy	8,756 ±0.0138 keV
Single-particle energy	8,773 ±3.493 keV
Neutron separation energy	9,319 ±0.8182 keV
Q value for electron capture	-3,978 ±2.74 keV
β⁻ decay energy	1,323 ±0.7899 keV
β⁻ decay energy with neutron	-6,497 ±0.7909 keV

Point at nuclide Decay chain of Cobalt-61

62CoCobalt-62

Classification	z: 27; n: 35; m: 62
Half life	1.54 ±10 m
Natural abundance	synthetic nuclide
Spin/parity	(2)+
Decay modes	β⁻ decay
Discovery	1949
Mass excess	-61,430 ±18.57 keV
Binding energy	8,721 ±0.2996 keV
Single-particle energy	9,792 ±18.75 keV
Neutron separation energy	6,597 ±18.58 keV
Q value for electron capture	-2,547 ±18.78 keV
β⁻ decay energy	5,322 ±18.56 keV
β⁻ decay energy with neutron	-5,274 ±18.57 keV

Point at nuclide Decay chain of Cobalt-62

63CoCobalt-63

Classification	z: 27; n: 36; m: 63
Half life	27.4 ±5 s
Natural abundance	synthetic nuclide
Spin/parity	7/2-
Decay modes	β⁻ decay
Discovery	1960
Mass excess	-61,860 ±18.57 keV
Binding energy	8,717 ±0.2948 keV
Single-particle energy	10,260 ±18.78 keV
Neutron separation energy	8,498 ±26.26 keV
Q value for electron capture	-6,216 ±19.06 keV
β⁻ decay energy	3,661 ±18.57 keV
β⁻ decay energy with neutron	-3,177 ±18.57 keV

Point at nuclide Decay chain of Cobalt-63

64CoCobalt-64

Classification	z: 27; n: 37; m: 64
Half life	0.3 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	β⁻ decay
Discovery	1969
Mass excess	-59,800 ±20 keV
Binding energy	8,675 ±0.3126 keV
Single-particle energy	11,440 ±20.46 keV
Neutron separation energy	6,012 ±27.29 keV
Q value for electron capture	-4,823 ±20.62 keV
β⁻ decay energy	7,306 ±20 keV
β⁻ decay energy with neutron	-2,351 ±20 keV

Point at nuclide Decay chain of Cobalt-64

65CoCobalt-65

Classification	z: 27; n: 38; m: 65
Half life	1.16 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	(7/2)-
Decay modes	β⁻ decay
Discovery	1978
Mass excess	-59,190 ±2.083 keV
Binding energy	8,656 ±0.032 keV
Single-particle energy	11,500 ±5.432 keV
Neutron separation energy	7,464 ±20.11 keV
Q value for electron capture	-7,968 ±5.52 keV
β⁻ decay energy	5,940 ±2.137 keV
β⁻ decay energy with neutron	-157.5 ±2.133 keV

Point at nuclide Decay chain of Cobalt-65

66CoCobalt-66

Classification	z: 27; n: 39; m: 66
Half life	0.2 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	β⁻ decay
Discovery	1985
Mass excess	-56,410 ±13.97 keV
Binding energy	8,605 ±0.2117 keV
Single-particle energy	12,470 ±14.87 keV
Neutron separation energy	5,294 ±14.12 keV
Q value for electron capture	-6,341 ±14.56 keV
β⁻ decay energy	9,597 ±14.04 keV
β⁻ decay energy with neutron	645.9 ±13.98 keV

Point at nuclide Decay chain of Cobalt-66

67CoCobalt-67

Classification	z: 27; n: 40; m: 67
Half life	0.425 ±20 s
Natural abundance	synthetic nuclide
Spin/parity	(7/2-)
Decay modes	β⁻ decay
Discovery	1985
Mass excess	-55,330 ±6.443 keV
Binding energy	8,581 ±0.0962 keV
Single-particle energy	12,540 ±7.636 keV
Neutron separation energy	6,984 ±15.38 keV
Q value for electron capture	-9,614 ±7.49 keV
β⁻ decay energy	8,420 ±7.06 keV
β⁻ decay energy with neutron	2,613 ±6.592 keV

Point at nuclide Decay chain of Cobalt-67

68CoCobalt-68

Classification	z: 27; n: 41; m: 68
Half life	0.2 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(7-)
Decay modes	β⁻ decay
Discovery	1985
Mass excess	-51,650 ±3.859 keV
Binding energy	8,520 ±0.0567 keV
Single-particle energy	13,220 ±5.429 keV
Neutron separation energy	4,392 ±7.51 keV
Q value for electron capture	-7,746 ±193 keV
β⁻ decay energy	11,820 ±4.876 keV
β⁻ decay energy with neutron	4,028 ±4.819 keV

Point at nuclide Decay chain of Cobalt-68

69CoCobalt-69

Classification	z: 27; n: 42; m: 69
Half life	227 ±11 ms
Natural abundance	synthetic nuclide
Spin/parity	(7/2-)
Decay modes	β⁻ decay
Discovery	1985
Mass excess	-50,390 ±85.69 keV
Binding energy	8,495 ±1.242 keV
Single-particle energy	13,770 ±211 keV
Neutron separation energy	6,814 ±85.78 keV
Q value for electron capture	-11,190 ±217.5 keV
β⁻ decay energy	9,593 ±85.77 keV
β⁻ decay energy with neutron	5,007 ±85.74 keV

Point at nuclide Decay chain of Cobalt-69

70CoCobalt-70

Classification	z: 27; n: 43; m: 70
Half life	112 ±7 ms
Natural abundance	synthetic nuclide
Spin/parity	(6- 7-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1998
Mass excess	-46,530 ±10.99 keV
Binding energy	8,434 ±0.157 keV
Single-particle energy	14,610 ±201 keV
Neutron separation energy	4,210 ±86.39 keV
Q value for electron capture	-9,635 ±300.2 keV
β⁻ decay energy	12,680 ±11.19 keV
β⁻ decay energy with neutron	5,382 ±11.6 keV

Point at nuclide Decay chain of Cobalt-70

71CoCobalt-71

Classification	z: 27; n: 44; m: 71
Half life	80 ±3 ms
Natural abundance	synthetic nuclide
Spin/parity	(7/2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1992
Mass excess	-44,370 ±465 keV
Binding energy	8,398 ±6.549 keV
Single-particle energy	14,760 ±553 keV
Neutron separation energy	5,916 ±465.1 keV
Q value for electron capture	-12,440 ±613.3 keV
β⁻ decay energy	11,030 ±465 keV
β⁻ decay energy with neutron	6,772 ±465 keV

Point at nuclide Decay chain of Cobalt-71

72CoCobalt-72

Classification	z: 27; n: 45; m: 72
Half life	59.9 ±17 ms
Natural abundance	synthetic nuclide
Spin/parity	^{6- 7-}
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1992
Mass excess	-40,300 ±300 keV
Binding energy	8,338 ±4 keV
Single-particle energy	15,650 ±500 keV
Neutron separation energy	4,002 ±553 keV
Q value for electron capture	-11,050 ±583 keV
β⁻ decay energy	13,920 ±300 keV
β⁻ decay energy with neutron	7,035 ±300 keV

Point at nuclide Decay chain of Cobalt-72

73CoCobalt-73

Classification	z: 27; n: 46; m: 73
Half life	40.7 ±13 ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1995
Mass excess	-37,970 ±300 keV
Binding energy	8,302 ±4 keV
Single-particle energy	16,000 ±583 keV
Neutron separation energy	5,741 ±424 keV
Q value for electron capture	-13,980 ±583 keV
β⁻ decay energy	12,130 ±300 keV
β⁻ decay energy with neutron	8,185 ±300 keV

Point at nuclide Decay chain of Cobalt-73

74CoCobalt-74

Classification	z: 27; n: 47; m: 74
Half life	31.3 ±15 ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1995
Mass excess	-33,540 ±400 keV
Binding energy	8,239 ±5 keV
Single-particle energy	16,840 ±640 keV
Neutron separation energy	3,642 ±500 keV
Q value for electron capture	-12,880 ±640.3 keV
β⁻ decay energy	15,160 ±447 keV
β⁻ decay energy with neutron	8,497 ±400 keV

Point at nuclide Decay chain of Cobalt-74

75CoCobalt-75

Classification	z: 27; n: 48; m: 75
Half life	30 ±11 ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1995
Mass excess	-30,560 ±400 keV
Binding energy	8,197 ±5 keV
Single-particle energy	17,190 ±640 keV
Neutron separation energy	5,091 ±565 keV
Q value for electron capture	-15,860 ±721.1 keV
β⁻ decay energy	13,680 ±447 keV
β⁻ decay energy with neutron	10,060 ±447 keV

Point at nuclide Decay chain of Cobalt-75

76CoCobalt-76

Classification	z: 27; n: 49; m: 76
Half life	21.7 ± ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with two-neutron emission; β⁻ decay with neutron emission
Discovery	2010
Mass excess	-25,660 ±500 keV
Binding energy	8,131 ±7 keV
Single-particle energy	18,240 ±781 keV
Neutron separation energy	3,171 ±640 keV
Q value for electron capture	-15,070 ±781 keV
β⁻ decay energy	16,530 ±583 keV
β⁻ decay energy with neutron	10,500 ±539 keV

Point at nuclide Decay chain of Cobalt-76

77CoCobalt-77

Classification	z: 27; n: 50; m: 77
Half life	13 ± ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	2014
Mass excess	-21,910 ±600 keV
Binding energy	8,082 ±8 keV
Single-particle energy	18,600 ±848 keV
Neutron separation energy	4,321 ±781 keV
β⁻ decay energy	15,440 ±721 keV
β⁻ decay energy with neutron	12,200 ±671 keV

Point at nuclide Decay chain of Cobalt-77

78CoCobalt-78

Classification	z: 27; n: 51; m: 78
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2017
Mass excess	-15,320 ±700 keV
Binding energy	7,997 ±9 keV
Neutron separation energy	1,482 ±922 keV
β⁻ decay energy	19,560 ±806 keV
β⁻ decay energy with neutron	13,950 ±806 keV

Point at nuclide

Isotopes of Cobalt

48CoCobalt-48ads_clickdownload

50CoCobalt-50ads_clickcall_splitdownload

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48CoCobalt-48

50CoCobalt-50

51CoCobalt-51

52CoCobalt-52

53CoCobalt-53

54CoCobalt-54

55CoCobalt-55

56CoCobalt-56

57CoCobalt-57

58CoCobalt-58

59CoCobalt-59

60CoCobalt-60

61CoCobalt-61

62CoCobalt-62

63CoCobalt-63

64CoCobalt-64

65CoCobalt-65

66CoCobalt-66

67CoCobalt-67

68CoCobalt-68

69CoCobalt-69

70CoCobalt-70

71CoCobalt-71

72CoCobalt-72

73CoCobalt-73

74CoCobalt-74

75CoCobalt-75

76CoCobalt-76

77CoCobalt-77

78CoCobalt-78