| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.49720 | |||
| Density | 2.11 | g cm-3 | ||
| Mean excitation energy | 87.9 | eV | ||
| Minimum ionization | 1.744 | MeV g-1cm2 | 3.681 | MeV cm-1 |
| Nuclear collision length | 59.0 | g cm-2 | 27.98 | cm |
| Nuclear interaction length | 85.2 | g cm-2 | 40.40 | cm |
| Pion collision length | 86.2 | g cm-2 | 40.87 | cm |
| Pion interaction length | 117.3 | g cm-2 | 55.58 | cm |
| Radiation length | 39.92 | g cm-2 | 18.92 | cm |
| Critical energy | 76.06 | MeV (for e-) | 73.98 | MeV (for e+) |
| Molière radius | 11.13 | g cm-2 | 5.275 | cm |
Plasma energy ![]() |
29.51 | eV | ||
| Muon critical energy | 990. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 3 | |||
| 6 | |||
| 8 | |||
| * calculated from mass fraction data. | |||