| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.55947 | |||
| Density | 0.920 | g cm-3 | ||
| Minimum ionization | 2.029 | MeV g-1cm2 | 1.867 | MeV cm-1 |
| Nuclear collision length | 57.1 | g cm-2 | 62.06 | cm |
| Nuclear interaction length | 80.5 | g cm-2 | 87.55 | cm |
| Pion collision length | 84.6 | g cm-2 | 92.01 | cm |
| Pion interaction length | 112.5 | g cm-2 | 122.3 | cm |
| Radiation length | 41.73 | g cm-2 | 45.36 | cm |
| Critical energy | 92.67 | MeV (for e-) | 90.23 | MeV (for e+) |
| Molière radius | 9.55 | g cm-2 | 10.38 | cm |
Plasma energy ![]() |
20.67 | eV | ||
| Muon critical energy | 1184. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 7 | |||
| 8 | |||
| 11 | |||
| 12 | |||
| 15 | |||
| 16 | |||
| 17 | |||
| 19 | |||
| 20 | |||
| 26 | |||
| 30 | |||
| * calculated from mass fraction data. | |||