Prompt neutron Principle Principle

| Group_ | Half_Life_s | Decay_Constant_s_1_ | Yield_Neutrons_per_Fission | Fraction |
|---|---|---|---|---|
| 1 | 55.72 | 0.0124 | 0.00052 | 0.000215 |
| 2 | 22.72 | 0.0305 | 0.00546 | 0.001424 |
| 3 | 6.22 | 0.111 | 0.00310 | 0.001274 |
| 4 | 2.30 | 0.301 | 0.00624 | 0.002568 |
| 5 | 0.614 | 1.14 | 0.00182 | 0.000748 |
| 6 | 0.230 | 3.01 | 0.00066 | 0.000273 |