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 β = 1 n/cm²/s
1 n/cm²/s = 1 β
例:
15 ベータ粒子を中性子流束に変換します。
15 β = 15 n/cm²/s
| ベータ粒子 | 中性子流束 |
|---|---|
| 0.01 β | 0.01 n/cm²/s |
| 0.1 β | 0.1 n/cm²/s |
| 1 β | 1 n/cm²/s |
| 2 β | 2 n/cm²/s |
| 3 β | 3 n/cm²/s |
| 5 β | 5 n/cm²/s |
| 10 β | 10 n/cm²/s |
| 20 β | 20 n/cm²/s |
| 30 β | 30 n/cm²/s |
| 40 β | 40 n/cm²/s |
| 50 β | 50 n/cm²/s |
| 60 β | 60 n/cm²/s |
| 70 β | 70 n/cm²/s |
| 80 β | 80 n/cm²/s |
| 90 β | 90 n/cm²/s |
| 100 β | 100 n/cm²/s |
| 250 β | 250 n/cm²/s |
| 500 β | 500 n/cm²/s |
| 750 β | 750 n/cm²/s |
| 1000 β | 1,000 n/cm²/s |
| 10000 β | 10,000 n/cm²/s |
| 100000 β | 100,000 n/cm²/s |
Inayam