| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.53757 | |||
| Specific gravity | 1.10 | g cm-3 | ||
| Minimum ionization | 1.887 | MeV g-1cm2 | 2.079 | MeV cm-1 |
| Nuclear collision length | 62.4 | g cm-2 | 56.67 | cm |
| Nuclear interaction length | 91.0 | g cm-2 | 82.60 | cm |
| Radiation length | 28.20 | g cm-2 | 25.61 | cm |
| Critical energy | 58.59 | MeV (for e-) | 57.00 | MeV (for e+) |
| Molière radius | 10.21 | g cm-2 | 9.268 | cm |
Plasma energy ![]() |
22.17 | eV | ||
| Muon critical energy | 803. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 8 | |||
| 16 | |||
| * calculated from mass fraction data. | |||