| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.51986 | |||
| Density | 1.20 | g cm-3 | ||
| Minimum ionization | 1.857 | MeV g-1cm2 | 2.226 | MeV cm-1 |
| Nuclear collision length | 59.0 | g cm-2 | 49.23 | cm |
| Nuclear interaction length | 85.0 | g cm-2 | 70.94 | cm |
| Pion collision length | 86.4 | g cm-2 | 72.06 | cm |
| Pion interaction length | 117.0 | g cm-2 | 97.61 | cm |
| Radiation length | 40.09 | g cm-2 | 33.44 | cm |
| Critical energy | 81.68 | MeV (for e-) | 79.50 | MeV (for e+) |
| Molière radius | 10.41 | g cm-2 | 8.682 | cm |
Plasma energy ![]() |
22.75 | eV | ||
| Muon critical energy | 1058. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 7 | |||
| 8 | |||
| * calculated from mass fraction data. | |||