Plutonium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
228Pu | 228.038742 (35) |
| 10 | ms | 36,088 (32) | 7,590.5 (1.4) | A~100 |
|
229Pu | 229.040150 (55) |
| 120 | s | 37,400 (51) | 7,586.9 (2.2) | A | 100 |
230Pu | 230.039650 (16) |
| 1.7 | m | 36,934 (15) | 7,590.99 (6.6) | A | ? |
231Pu | 231.041101 (28) |
| 8.6 | m | 38,285 (26) | 7,587.2 (1.1) | B+ | 87 5 |
232Pu | 232.041187 (19) |
| 33.7 | m | 38,366 (18) | 7,588.96 (7.8) | EC | ? |
233Pu | 233.042997 (54) |
| 20.9 | m | 40,052 (50) | 7,583.8 (2.2) | B+~100 |
|
234Pu | 234.0433171 (75) |
| 8.8 | h | 40,349.6 (7) | 7,584.61 (3) | EC~94 |
|
235Pu | 235.045286 (22) |
| 25.3 | m | 42,184 (21) | 7,578.87 (8.8) | B+~100 |
|
236Pu | 236.0460580 (24) |
| 2.858 | y | 42,902.7 (2.2) | 7,577.913 (9) | A | 100 |
237Pu | 237.0484097 (24) |
| 45.2 | d | 45,093.3 (2.2) | 7,570.752 (9) | EC~100 |
|
238Pu | 238.0495599 (20) |
| 87.7 | y | 46,164.7 (1.8) | 7,568.354 (8) | A | 100 |
239Pu | 239.0521634 (20) |
| 24.11 | ky | 48,589.9 (1.8) | 7,560.311 (8) | A | 100 |
240Pu | 240.0538135 (20) |
| 6.564 | ky | 50,127.0 (1.8) | 7,556.036 (8) | A | 100 |
241Pu | 241.0568515 (20) |
| 14.35 | y | 52,956.8 (1.8) | 7,546.432 (8) | B-~100 |
|
242Pu | 242.0587426 (20) |
| 375 | ky | 54,718.4 (1.9) | 7,541.321 (8) | A | 100 |
243Pu | 243.0620031 (34) |
| 4.956 | h | 57,755.5 (3.2) | 7,531.00 (1.3) | B- | 100 |
244Pu | 244.0642039 (54) |
| 80 | My | 59,805.6 (5.1) | 7,524.82 (2.1) | A~100 |
|
245Pu | 245.067747 (15) |
| 10.5 | h | 63,106 (14) | 7,513.58 (5.9) | B- | 100 |
246Pu | 246.070205 (16) |
| 10.84 | d | 65,395 (15) | 7,506.54 (6.2) | B- | 100 |
247Pu | 247.07407 (32) |
| 2.27 | d | 69,000 (300) | 7,494 (1) | B- | |
237mPu | 237.0484097 (24) |
| 180 | ms | 45,093.3 (2.2) | 7,570.752 (9) | IT | 100 |
239mPu | 239.0521634 (20) |
| 193 | ns | 48,589.9 (1.8) | 7,560.311 (8) | IT | 100 |
241mPu | 241.0568515 (20) |
| 880 | ns | 52,956.8 (1.8) | 7,546.432 (8) | 0 |
|
243mPu | 243.0620031 (34) |
| 330 | ns | 57,755.5 (3.2) | 7,531.00 (1.3) | IT | 100 |
241m1Pu | 241.0568515 (20) |
| 21 | us | 52,956.8 (1.8) | 7,546.432 (8) | 0 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005