| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.44655 | |||
| Specific gravity | 5.56 | g cm-3 | ||
| Minimum ionization | 1.367 | MeV g-1cm2 | 7.601 | MeV cm-1 |
| Nuclear collision length | 89.2 | g cm-2 | 16.05 | cm |
| Nuclear interaction length | 147.2 | g cm-2 | 26.48 | cm |
| Radiation length | 10.34 | g cm-2 | 1.859 | cm |
| Critical energy | 15.22 | MeV (for e-) | 14.72 | MeV (for e+) |
| Molière radius | 14.41 | g cm-2 | 2.591 | cm |
Plasma energy ![]() |
45.41 | eV | ||
| Muon critical energy | 256. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 17 | |||
| 47 | |||
| * calculated from mass fraction data. | |||