| 同位素符号 | 半衰期(a) | 同位素组份 | α粒子能量，Mev (强度，%) | γ能量，Mev (强度，%) | 比活度(Bq/g) | S·F中子产额 (n/s·g) | |
| 原子份额 | 质量份额 | ||||||
| 234U | 2.45 × 105 | 0.054% | 0.053% | 4.776 (72.5) 4.723 (27.5) | 0.0532 (0.119) 0.1209 (0.041) | 2.31 × 108 | 4.61 × 10−3 |
| 235U | 7.038 × 108 | 5.061% | 5% | 4.597 (5.4) 4.555 (4.5) 4.501 (1.7) 4.435 (0.74) 4.411 (2.8) 4.392 (54) 4.360 (17) 4.319 (4.7) 4.209 (5.7) | 0.185 (54) 0.143 (10.5) 0.163 (4.7) 0.205 (4.7) 0.202 (1.0) | 8.00 × 104 | 7.43 × 10−4 |
| 238U | 4.468 × 109 | 94.885% | 94.947% | 4.196 (77) 4.149 (23) | 0.0496 (0.32) | 1.24 × 104 | 1.8 × 10−2 |
| 235U质量富集度为5%的铀 | 1.38 × 105 | 1.71 × 10−2 | |||||