放射性是不稳定原子核因辐射失去能量的过程。它以Becquerels(BQ)进行测量。
1 mrem = 0.001 β
1 β = 1,000 mrem
例子:
将15 搅拌转换为beta颗粒:
15 mrem = 0.015 β
| 搅拌 | beta颗粒 |
|---|---|
| 0.01 mrem | 1.0000e-5 β |
| 0.1 mrem | 0 β |
| 1 mrem | 0.001 β |
| 2 mrem | 0.002 β |
| 3 mrem | 0.003 β |
| 5 mrem | 0.005 β |
| 10 mrem | 0.01 β |
| 20 mrem | 0.02 β |
| 30 mrem | 0.03 β |
| 40 mrem | 0.04 β |
| 50 mrem | 0.05 β |
| 60 mrem | 0.06 β |
| 70 mrem | 0.07 β |
| 80 mrem | 0.08 β |
| 90 mrem | 0.09 β |
| 100 mrem | 0.1 β |
| 250 mrem | 0.25 β |
| 500 mrem | 0.5 β |
| 750 mrem | 0.75 β |
| 1000 mrem | 1 β |
| 10000 mrem | 10 β |
| 100000 mrem | 100 β |