| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.51903 | |||
| Specific gravity | 1.35 | g cm-3 | ||
| Minimum ionization | 1.854 | MeV g-1cm2 | 2.503 | MeV cm-1 |
| Nuclear collision length | 59.3 | g cm-2 | 43.93 | cm |
| Nuclear interaction length | 85.6 | g cm-2 | 63.44 | cm |
| Radiation length | 40.58 | g cm-2 | 30.06 | cm |
| Critical energy | 82.22 | MeV (for e-) | 80.02 | MeV (for e+) |
| Molière radius | 10.47 | g cm-2 | 7.752 | cm |
Plasma energy ![]() |
24.12 | eV | ||
| Muon critical energy | 1064. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 7 | |||
| * calculated from mass fraction data. | |||