Cobalt Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
47Co | 47.01149 (54) |
|
|
| 10,700 (500) | 7,390 (11) | p ? |
|
48Co | 48.00176 (43) |
|
|
| 1,640 (400) | 7,597 (8) | p ? |
|
49Co | 48.98972 (28) |
| <35 | ns | -9,580 (260) | 7,836 (5) | p ? |
|
50Co | 49.98154 (18) |
| 44 | ms | -17,200 (170) | 7,993 (3) | B+ | 100 |
51Co | 50.97072 (16) |
| 60 | ms | -27,270 (150) | 8,192 (3) | B+ ? |
|
52Co | 51.963590 (70) |
| 115 | ms | -33,916 (65) | 8,317 (1) | B+ | 100 |
53Co | 52.954219 (19) |
| 242 | ms | -42,645 (18) | 8,477.4 (3.4) | B+ | 100 |
54Co | 53.94845964 (77) |
| 193.23 | ms | -48,009.54 (72) | 8,569.21 (1.3) | B+ | 100 |
55Co | 54.94199903 (78) |
| 17.53 | h | -54,027.56 (73) | 8,669.58 (1.3) | B+ | 100 |
56Co | 55.9398393 (23) |
| 77.23 | d | -56,039.4 (2.1) | 8,694.82 (3.8) | B+ | 100 |
57Co | 56.93629137 (76) |
| 271.74 | d | -59,344.20 (71) | 8,741.86 (1.3) | EC | 100 |
58Co | 57.9357528 (13) |
| 70.86 | d | -59,845.9 (1.2) | 8,738.95 (2.2) | B+ | 100 |
59Co | 58.93319505 (67) | 100 | stable |
| -62,228.41 (62) | 8,768.01 (1.1) |
|
|
60Co | 59.93381706 (67) |
| 5.2713 | y | -61,649.01 (63) | 8,746.75 (1) | B- | 100 |
61Co | 60.9324758 (10) |
| 1.65 | h | -62,898.42 (93) | 8,756.15 (1.5) | B- | 100 |
62Co | 61.934051 (21) |
| 1.5 | m | -61,432 (20) | 8,721.4 (3.2) | B- | 100 |
63Co | 62.933612 (21) |
| 26.9 | s | -61,840 (20) | 8,717.6 (3.2) | B- | 100 |
64Co | 63.935810 (21) |
| 300 | ms | -59,793 (20) | 8,675.5 (3.1) | B- | 100 |
65Co | 64.936478 (14) |
| 1.2 | s | -59,170 (13) | 8,656.6 (2) | B- | 100 |
66Co | 65.93976 (27) |
| 194 | ms | -56,110 (250) | 8,601 (3.8) | B- | 100 |
67Co | 66.94089 (34) |
| 425 | ms | -55,060 (320) | 8,578 (4.8) | B- | 100 |
68Co | 67.94487 (34) |
| 200 | ms | -51,350 (320) | 8,516 (4.7) | B- | 100 |
69Co | 68.94632 (36) |
| 227 | ms | -50,000 (340) | 8,490 (4.9) | B- | 100 |
70Co | 69.95100 (90) |
| 125 | ms | -45,640 (840) | 8,420 (12) | B- | 100 |
71Co | 70.95290 (90) |
| 97 | ms | -43,870 (840) | 8,390 (12) | B- | 100 |
72Co | 71.95781 (64) |
| 90 | ms | -39,300 (600) | 8,324 (8) | B- | 100 |
73Co | 72.96024 (75) |
| 80 | ms | -37,040 (700) | 8,290 (10) | B- ? |
|
74Co | 73.96538 (86) |
| 50 | ms | -32,250 (800) | 8,220 (11) | B- ? |
|
75Co | 74.96833 (86) |
| 40 | ms | -29,500 (800) | 8,180 (11) | B- ? |
|
52mCo | 51.963590 (70) |
| 104 | ms | -33,916 (65) | 8,317 (1) | B+ | ? |
53mCo | 52.954219 (19) |
| 247 | ms | -42,645 (18) | 8,477.4 (3.4) | B+~98.5 |
|
54mCo | 53.94845964 (77) |
| 1.48 | m | -48,009.54 (72) | 8,569.21 (1.3) | B+ | 100 |
58mCo | 57.9357528 (13) |
| 9.04 | h | -59,845.9 (1.2) | 8,738.95 (2.2) | IT | 100 |
60mCo | 59.93381706 (67) |
| 10.467 | m | -61,649.01 (63) | 8,746.75 (1) | IT~100 |
|
62mCo | 61.934051 (21) |
| 13.91 | m | -61,432 (20) | 8,721.4 (3.2) | B->99 |
|
66mCo | 65.93976 (27) |
| 1.21 | us | -56,110 (250) | 8,601 (3.8) | IT | 100 |
68mCo | 67.94487 (34) |
| 1.6 | s | -51,350 (320) | 8,516 (4.7) | B- | ? |
70mCo | 69.95100 (90) |
| 500 | ms | -45,640 (840) | 8,420 (12) | B-~100 |
|
58m1Co | 57.9357528 (13) |
| 10.4 | us | -59,845.9 (1.2) | 8,738.95 (2.2) | IT | 100 |
66m1Co | 65.93976 (27) |
| >100 | us | -56,110 (250) | 8,601 (3.8) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005