Promethium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
126Pm | 125.95752 (54) |
| 500 | ms | -39,570 (500) | 8,007 (4) | B+ ? |
|
127Pm | 126.95163 (64) |
| 1 | s | -45,060 (600) | 8,050 (5) | B+ ? |
|
128Pm | 127.94842 (43) |
| 1 | s | -48,050 (400) | 8,074 (3) | B+~100 |
|
129Pm | 128.94316 (43) |
| 3 | s | -52,950 (400) | 8,112 (3) | B+ ? |
|
130Pm | 129.94045 (32) |
| 2.6 | s | -55,470 (300) | 8,131 (2) | B+ | 100 |
131Pm | 130.93587 (21) |
| 6.3 | s | -59,740 (200) | 8,163 (1) | B+ | 100 |
132Pm | 131.93375 (21) |
| 6.3 | s | -61,710 (200) | 8,177 (1) | B+ | 100 |
133Pm | 132.929782 (54) |
| 15 | s | -65,408 (50) | 8,204.3 (3.8) | B+ | 100 |
134Pm | 133.928353 (62) |
| 22 | s | -66,739 (58) | 8,213.2 (4.3) | B+ | 100 |
135Pm | 134.924876 (63) |
| 49 | s | -69,978 (59) | 8,236.2 (4.4) | B+ | 100 |
136Pm | 135.923566 (84) |
| 107 | s | -71,198 (78) | 8,243.9 (5.7) | B+ | 100 |
137Pm | 136.920479 (14) |
| 2 | m | -74,073 (13) | 8,263.65 (9.5) | B+ ? |
|
138Pm | 137.919548 (30) |
| 10 | s | -74,940 (27) | 8,268.5 (2) | B+ | 100 |
139Pm | 138.916804 (14) |
| 4.15 | m | -77,496 (13) | 8,285.51 (9.7) | B+ | 100 |
140Pm | 139.916042 (40) |
| 9.2 | s | -78,207 (37) | 8,289.1 (2.6) | B+ | 100 |
141Pm | 140.913555 (15) |
| 20.9 | m | -80,523 (14) | 8,303.94 (9.9) | B+ | 100 |
142Pm | 141.912874 (27) |
| 40.5 | s | -81,157 (25) | 8,306.8 (1.8) | B+ | 100 |
143Pm | 142.9109326 (36) |
| 265 | d | -82,965.7 (3.3) | 8,317.77 (2.3) | EC | 100 |
144Pm | 143.9125908 (34) |
| 363 | d | -81,421.1 (3.2) | 8,305.33 (2.2) | EC | 100 |
145Pm | 144.9127490 (34) |
| 17.7 | y | -81,273.8 (3.1) | 8,302.70 (2.2) | EC | |
146Pm | 145.9146963 (50) |
| 5.53 | y | -79,459.9 (4.7) | 8,288.69 (3.2) | EC | 66.0 13 |
147Pm | 146.9151385 (26) |
| 2.6234 | y | -79,047.9 (2.4) | 8,284.41 (1.6) | B- | 100 |
148Pm | 147.9174746 (65) |
| 5.368 | d | -76,871.9 (6.1) | 8,268.27 (4.1) | B- | 100 |
149Pm | 148.9183342 (45) |
| 53.08 | h | -76,071.2 (4.2) | 8,261.57 (2.8) | B- | 100 |
150Pm | 149.920984 (22) |
| 2.68 | h | -73,603 (20) | 8,243.9 (1.3) | B- | 100 |
151Pm | 150.9212070 (57) |
| 28.4 | h | -73,395.2 (5.3) | 8,241.33 (3.5) | B- | 100 |
152Pm | 151.923497 (28) |
| 4.12 | m | -71,262 (26) | 8,226.2 (1.7) | B- | 100 |
153Pm | 152.924117 (12) |
| 5.25 | m | -70,685 (11) | 8,221.39 (7.3) | B- | 100 |
154Pm | 153.926464 (48) |
| 1.73 | m | -68,498 (45) | 8,206.2 (2.9) | B- | 100 |
155Pm | 154.928101 (32) |
| 41.5 | s | -66,973 (30) | 8,195.5 (1.9) | B- | 100 |
156Pm | 155.931057 (37) |
| 26.7 | s | -64,220 (34) | 8,177.1 (2.2) | B- | 100 |
157Pm | 156.93304 (12) |
| 10.56 | s | -62,370 (110) | 8,164.6 (7.1) | B- | 100 |
158Pm | 157.93656 (14) |
| 4.8 | s | -59,090 (130) | 8,143.3 (8) | B- | 100 |
159Pm | 158.93897 (21) |
| 1.47 | s | -56,850 (200) | 8,129 (1) | B- | 100 |
160Pm | 159.94299 (32) |
| 2 | s | -53,100 (300) | 8,105 (2) | B- ? |
|
161Pm | 160.94586 (54) |
| 700 | ms | -50,430 (500) | 8,088 (3) | B- ? |
|
162Pm | 161.95029 (75) |
| 500 | ms | -46,310 (700) | 8,063 (4) | B- ? |
|
163Pm | 162.95368 (86) |
| 200 | ms | -43,150 (800) | 8,043 (5) | B- ? |
|
133mPm | 132.929782 (54) |
| 10 | s | -65,408 (50) | 8,204.3 (3.8) | B+ ? |
|
134mPm | 133.928353 (62) |
| ~5 | s | -66,739 (58) | 8,213.2 (4.3) | B+ | 100 |
135mPm | 134.924876 (63) |
| 40 | s | -69,978 (59) | 8,236.2 (4.4) | B+ | 100 |
136mPm | 135.923566 (84) |
| 47 | s | -71,198 (78) | 8,243.9 (5.7) | B+ | 100 |
137mPm | 136.920479 (14) |
| 2.4 | m | -74,073 (13) | 8,263.65 (9.5) | B+ | 100 |
138mPm | 137.919548 (30) |
| 3.24 | m | -74,940 (27) | 8,268.5 (2) | B+ | 100 |
139mPm | 138.916804 (14) |
| 180 | ms | -77,496 (13) | 8,285.51 (9.7) | IT~100 |
|
140mPm | 139.916042 (40) |
| 5.95 | m | -78,207 (37) | 8,289.1 (2.6) | B+ | 100 |
141mPm | 140.913555 (15) |
| 630 | ns | -80,523 (14) | 8,303.94 (9.9) | IT | 100 |
142mPm | 141.912874 (27) |
| 2 | ms | -81,157 (25) | 8,306.8 (1.8) | IT | 100 |
143mPm | 142.9109326 (36) |
| 24 | ns | -82,965.7 (3.3) | 8,317.77 (2.3) | IT | 100 |
144mPm | 143.9125908 (34) |
| 780 | ns | -81,421.1 (3.2) | 8,305.33 (2.2) | IT | 100 |
148mPm | 147.9174746 (65) |
| 41.29 | d | -76,871.9 (6.1) | 8,268.27 (4.1) | B- | 95.8 6 |
149mPm | 148.9183342 (45) |
| 35 | us | -76,071.2 (4.2) | 8,261.57 (2.8) | 0 |
|
152mPm | 151.923497 (28) |
| 7.52 | m | -71,262 (26) | 8,226.2 (1.7) | B- | 100 |
154mPm | 153.926464 (48) |
| 2.68 | m | -68,498 (45) | 8,206.2 (2.9) | B- | 100 |
138m1Pm | 137.919548 (30) |
| 3.24 | m | -74,940 (27) | 8,268.5 (2) | B+ | 100 |
144m1Pm | 143.9125908 (34) |
| ~2.7 | us | -81,421.1 (3.2) | 8,305.33 (2.2) | IT | 100 |
152m1Pm | 151.923497 (28) |
| 13.8 | m | -71,262 (26) | 8,226.2 (1.7) | B-~100 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005