| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.57275 | |||
| Density | 0.930 | g cm-3 | ||
| Mean excitation energy | 55.9 | eV | ||
| Minimum ionization | 2.088 | MeV g-1cm2 | 1.942 | MeV cm-1 |
| Nuclear collision length | 56.0 | g cm-2 | 60.24 | cm |
| Nuclear interaction length | 78.3 | g cm-2 | 84.14 | cm |
| Pion collision length | 83.6 | g cm-2 | 89.92 | cm |
| Pion interaction length | 110.1 | g cm-2 | 118.4 | cm |
| Radiation length | 44.85 | g cm-2 | 48.22 | cm |
| Critical energy | 102.22 | MeV (for e-) | 99.54 | MeV (for e+) |
| Molière radius | 9.30 | g cm-2 | 10.00 | cm |
Plasma energy ![]() |
21.03 | eV | ||
| Muon critical energy | 1288. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| * calculated from mass fraction data. | |||