| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.55509 | |||
| Specific gravity | 1.00 | g cm-3 | ||
| Minimum ionization | 2.018 | MeV g-1cm2 | 2.018 | MeV cm-1 |
| Nuclear collision length | 58.5 | g cm-2 | 58.50 | cm |
| Nuclear interaction length | 83.3 | g cm-2 | 83.33 | cm |
| Radiation length | 36.08 | g cm-2 | 36.08 | cm |
| Critical energy | 79.07 | MeV (for e-) | 76.98 | MeV (for e+) |
| Molière radius | 9.68 | g cm-2 | 9.677 | cm |
Plasma energy ![]() |
21.47 | eV | ||
| Muon critical energy | 1035. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 8 | |||
| * calculated from mass fraction data. | |||