| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.52792 | |||
| Density | 1.25 | g cm-3 | ||
| Mean excitation energy | 72.4 | eV | ||
| Minimum ionization | 1.889 | MeV g-1cm2 | 2.361 | MeV cm-1 |
| Nuclear collision length | 58.3 | g cm-2 | 46.61 | cm |
| Nuclear interaction length | 83.4 | g cm-2 | 66.70 | cm |
| Pion collision length | 85.7 | g cm-2 | 68.53 | cm |
| Pion interaction length | 115.3 | g cm-2 | 92.28 | cm |
| Radiation length | 41.74 | g cm-2 | 33.39 | cm |
| Critical energy | 86.37 | MeV (for e-) | 84.07 | MeV (for e+) |
| Molière radius | 10.25 | g cm-2 | 8.198 | cm |
Plasma energy ![]() |
23.41 | eV | ||
| Muon critical energy | 1110. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 8 | |||
| * calculated from mass fraction data. | |||