| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.53260 | |||
| Density | 0.971 | g cm-3 | ||
| Minimum ionization | 1.923 | MeV g-1cm2 | 1.867 | MeV cm-1 |
| Nuclear collision length | 57.7 | g cm-2 | 59.46 | cm |
| Nuclear interaction length | 82.2 | g cm-2 | 84.71 | cm |
| Pion collision length | 85.2 | g cm-2 | 87.73 | cm |
| Pion interaction length | 114.2 | g cm-2 | 117.7 | cm |
| Radiation length | 43.64 | g cm-2 | 44.96 | cm |
| Critical energy | 92.23 | MeV (for e-) | 89.80 | MeV (for e+) |
| Molière radius | 10.03 | g cm-2 | 10.34 | cm |
Plasma energy ![]() |
20.72 | eV | ||
| Muon critical energy | 1172. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| * calculated from mass fraction data. | |||