Table 5.
Physical Decay Characteristics of Various β-Emitting Radionuclides for Potential Use in Radiotherapy
| Radionuclide | Half-Life (error) | Decay Mode (% branching ratio) |
Enp/keV | Abundance, Inp/% |
Eγ/keV | Intensity, Iγ/% |
|---|---|---|---|---|---|---|
| 32P | 14.263 (3) d | β−(100%) | 1,710.48 (22) | 100 | — | — |
| 47Sc | 3.3492 (6) d | β−(100%) | 440.9 (19) 600.3 (19) |
68.4 (6) 31.6 (6) |
159.381 (15) | 68.3 (4) |
| 66Cu | 5.120 (14) m | β−(100%) | 1,602.8 (12) 2,642.0 (12) |
9.01 (9) 90.77 (9) |
1,039.2 (2) | 9.23 |
| 67Cu | 61.83 (12) h | β−(100%) | 168.2 (15) 377.1 (15) 468.4 (15) 561.7 (15) |
1.10 (11) 57 (6) 22.0 (22) 20.0 (22) |
91.266 (5) 93.311 (5) 184.577 (10) |
7.00 (10) 16.10 (20) 48.7 (3) |
| 89Sr | 50.53 (7) d | β−(100) | 1,495.1 (22) | 99.99036 (5) | — | — |
| 90Y | 64.00 (21) h | β−(100) | 2280.1 (16) | 99.9885 (14) | — | — |
| 105Rh | 35.36 (6) h | β−(100) | 248 (3) 261 (3) 567.2 (25) |
19.7 (5) 5.2 (4) 75.0 (6) |
306.1 (2) 318.9 (1) |
5.1 (3) 19.1 |
| 111Ag | 7.45 (1) d | β−(100) | 694.7 (14) 1,036.8 (14) |
7.1 (5) 92 (5) |
343.12 (2) | 6.7 |
| l17mSn | 13.60 (4) d | IT (100) | Auger L (2.95) Auger K (21.0) CE-K (126.82) CE-K (129.36) CE-L (151.56) |
91.8 (5) 10.7 (3) 64.9 (4) 11.699 26.16 (14) |
156.02 (3) 158.56 (2) |
2.114 (12) 86.4 |
| 131I | 8.0252 (6) d | β−(100) | 333.8 (6) 606.3 (6) |
7.23 (10) 89.6 (8) |
284.305 (5) 364.489 (5) 636.989 (4) |
6.12 (6) 81.5 (8) 7.16 (10) |
| 149Pm | 53.08 (5) h | β−(100) | 785 1,048 |
3.40 24 |
285.95 | 3.10 |
| 153Sm | 46.50 (21) h | β−(100) | 634.7 (7) 704.4 (7) 807.6 (7) |
31.3 (9) 49.4 (18) 18.4 (17) |
103.18 | 29.25 |
| 166Ho | 26.80 (2) h | β−(100) | 1,773.3 (11) 1,853.9 (11) |
48.7 (21) 50.0 (21) |
80.574 (8) | 6.71 (8) |
| 177Lu | 6.647 (4) d | β−(100) | 177.0 (8) 385.3 (8) 498.3 (8) |
11.61 (11) 9.0 (5) 79.4 (5) |
112.9 208.4 |
6.17 (7) 10.36 |
| 186Re | 3.7183 (11) d | ε (7.47 [10]) β−(92.53 [10]) |
Auger L (6.53) 932.3 (9) 1,069.5 (9) |
4.96 (10) 21.54 (11) 70.99 (14) |
137.157 (8) | 9.47 (3) |
| 188Re | 17.0040 (22) h | β−(100) | 1,965.4 (4) 2,120.4 (4) |
26.3 (5) 70.0 (5) |
155.041 (4) | 15.61 (18) |
| 195mPt | 4.010 (5) d | IT (100) | Auger L (7.24) Auger K (51.0) CE-L (17.01) CE-K (20.505) CE - M (27.59) CE-K (51.11) CE-L (85.02) CE-L (115.62) CE-M (126.20) |
140 (4) 3.3 (4) 69 (6) 65 (5) 16.0 (13) 13.4 (9) 11.5 (8) 61 (4) 19.3 (14) |
98.90 (2) 129.5 (2) |
11.7 (8) 2.90 (21) |
ε = electron capture; IT = isomeric transition; m = minutes.
Unless otherwise stated, standard deviations are given in parentheses.