| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.56176 | |||
| Specific gravity | 0.791 | g cm-3 | ||
| Minimum ionization | 2.038 | MeV g-1cm2 | 1.613 | MeV cm-1 |
| Nuclear collision length | 57.4 | g cm-2 | 72.57 | cm |
| Nuclear interaction length | 81.1 | g cm-2 | 102.5 | cm |
| Radiation length | 39.43 | g cm-2 | 49.83 | cm |
| Critical energy | 88.24 | MeV (for e-) | 85.92 | MeV (for e+) |
| Molière radius | 9.48 | g cm-2 | 11.97 | cm |
Plasma energy ![]() |
19.21 | eV | ||
| Muon critical energy | 1136. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 8 | |||
| * calculated from mass fraction data. | |||