| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.52767 | |||
| Density | 1.17 | g cm-3 | ||
| Mean excitation energy | 69.6 | eV | ||
| Minimum ionization | 1.894 | MeV g-1cm2 | 2.216 | MeV cm-1 |
| Nuclear collision length | 58.4 | g cm-2 | 49.92 | cm |
| Nuclear interaction length | 83.7 | g cm-2 | 71.51 | cm |
| Pion collision length | 85.8 | g cm-2 | 73.36 | cm |
| Pion interaction length | 115.7 | g cm-2 | 98.88 | cm |
| Radiation length | 42.09 | g cm-2 | 35.98 | cm |
| Critical energy | 87.34 | MeV (for e-) | 85.02 | MeV (for e+) |
| Molière radius | 10.22 | g cm-2 | 8.735 | cm |
Plasma energy ![]() |
22.64 | eV | ||
| Muon critical energy | 1120. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 7 | |||
| * calculated from mass fraction data. | |||