放射能は、不安定な原子核が放射によってエネルギーを失うプロセスです。Beckerels（BQ）で測定されます。
1 t½ = 1 n/cm²/s
1 n/cm²/s = 1 t½
例:
15 人生の半分を中性子流束に変換します。
15 t½ = 15 n/cm²/s
| 人生の半分 | 中性子流束 |
|---|---|
| 0.01 t½ | 0.01 n/cm²/s |
| 0.1 t½ | 0.1 n/cm²/s |
| 1 t½ | 1 n/cm²/s |
| 2 t½ | 2 n/cm²/s |
| 3 t½ | 3 n/cm²/s |
| 5 t½ | 5 n/cm²/s |
| 10 t½ | 10 n/cm²/s |
| 20 t½ | 20 n/cm²/s |
| 30 t½ | 30 n/cm²/s |
| 40 t½ | 40 n/cm²/s |
| 50 t½ | 50 n/cm²/s |
| 60 t½ | 60 n/cm²/s |
| 70 t½ | 70 n/cm²/s |
| 80 t½ | 80 n/cm²/s |
| 90 t½ | 90 n/cm²/s |
| 100 t½ | 100 n/cm²/s |
| 250 t½ | 250 n/cm²/s |
| 500 t½ | 500 n/cm²/s |
| 750 t½ | 750 n/cm²/s |
| 1000 t½ | 1,000 n/cm²/s |
| 10000 t½ | 10,000 n/cm²/s |
| 100000 t½ | 100,000 n/cm²/s |
Inayam