Curium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
233Cm | 233.050771 (77) |
| 1 | m | 47,293 (72) | 7,546.0 (3.1) | A | ? |
234Cm | 234.050160 (20) |
| 51 | s | 46,724 (18) | 7,550.68 (7.8) | A | ? |
235Cm | 235.05143 (22) |
| 5 | m | 47,910 (200) | 7,548 (1) | B+ ? |
|
236Cm | 236.05141 (22) |
| 10 | m | 47,890 (200) | 7,550 (1) | B+ ? |
|
237Cm | 237.05290 (22) |
| 20 | m | 49,280 (210) | 7,546 (1) | B+ ? |
|
238Cm | 238.053029 (39) |
| 2.4 | h | 49,396 (37) | 7,548.2 (1.5) | EC ? |
|
239Cm | 239.05496 (11) |
| ~2.9 | h | 51,190 (100) | 7,543 (0) | B+~100 |
|
240Cm | 240.0555295 (25) |
| 27 | d | 51,725.4 (2.3) | 7,542.86 (1) | A~100 |
|
241Cm | 241.0576530 (23) |
| 32.8 | d | 53,703.4 (2.2) | 7,536.841 (9) | EC | 99.0 1 |
242Cm | 242.0588358 (20) |
| 162.8 | d | 54,805.2 (1.8) | 7,534.497 (8) | A | 100 |
243Cm | 243.0613891 (22) |
| 29.1 | y | 57,183.6 (2.1) | 7,526.918 (9) | A~100 |
|
244Cm | 244.0627526 (20) |
| 18.1 | y | 58,453.7 (1.8) | 7,523.944 (7) | A | 100 |
245Cm | 245.0654912 (22) |
| 8.5 | ky | 61,004.7 (2.1) | 7,515.766 (8) | A | 100 |
246Cm | 246.0672237 (22) |
| 4.76 | ky | 62,618.4 (2.1) | 7,511.465 (8) | A~100 |
|
247Cm | 247.0703535 (47) |
| 15.6 | My | 65,533.9 (4.4) | 7,501.93 (1.8) | A | 100 |
248Cm | 248.0723485 (54) |
| 348 | ky | 67,392.2 (5.1) | 7,496.73 (2) | A | 91.61 16 |
249Cm | 249.0759534 (54) |
| 64.15 | m | 70,750.2 (5.1) | 7,485.55 (2) | B- | 100 |
250Cm | 250.078357 (12) |
| 8300 | y | 72,989 (11) | 7,478.94 (4.5) | SF~74 |
|
251Cm | 251.082285 (24) |
| 16.8 | m | 76,648 (23) | 7,466.72 (9.1) | B- | 100 |
252Cm | 252.08487 (32) |
| <1 | d | 79,060 (300) | 7,460 (1) | B- ? | |
244mCm | 244.0627526 (20) |
| 34 | ms | 58,453.7 (1.8) | 7,523.944 (7) | IT | 100 |
245mCm | 245.0654912 (22) |
| 290 | ns | 61,004.7 (2.1) | 7,515.766 (8) | IT | 100 |
249mCm | 249.0759534 (54) |
| 23 | us | 70,750.2 (5.1) | 7,485.55 (2) | A | 100 |
235mCm | 235.05143 (22) |
|
|
| 47,910 (200) | 7,548 (1) | 0 |
|
237mCm | 237.05290 (22) |
|
|
| 49,280 (210) | 7,546 (1) | 0 |
|
239mCm | 239.05496 (11) |
|
|
| 51,190 (100) | 7,543 (0) | 0 |
|
243mCm | 243.0613891 (22) |
|
|
| 57,183.6 (2.1) | 7,526.918 (9) | 0 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005