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Half-Value |
Tenth-Value Layer (cm) |
||||||
|---|---|---|---|---|---|---|---|
Radioisotope |
Gamma (MeV) |
Concrete |
Steel |
Lead |
Concrete |
Steel |
Lead |
| Cesium-137 | 0.66 | 4.8 | 1.6 | 0.7 | 15.7 | 5.3 | 2.1 |
| Cobalt-60 | 1.17, 1.33 |
6.6 | 2.1 | 1.2 | 20.8 | 6.9 | 4.0 |
