| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.54995 | |||
| Density | 1.06 | g cm-3 | ||
| Mean excitation energy | 75.2 | eV | ||
| Minimum ionization | 1.971 | MeV g-1cm2 | 2.089 | MeV cm-1 |
| Nuclear collision length | 58.6 | g cm-2 | 55.30 | cm |
| Nuclear interaction length | 83.6 | g cm-2 | 78.90 | cm |
| Pion collision length | 86.1 | g cm-2 | 81.22 | cm |
| Pion interaction length | 115.5 | g cm-2 | 109.0 | cm |
| Radiation length | 36.53 | g cm-2 | 34.46 | cm |
| Critical energy | 78.81 | MeV (for e-) | 76.71 | MeV (for e+) |
| Molière radius | 9.83 | g cm-2 | 9.272 | cm |
Plasma energy ![]() |
22.00 | eV | ||
| Muon critical energy | 1032. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 7 | |||
| 8 | |||
| 11 | |||
| 12 | |||
| 14 | |||
| 15 | |||
| 16 | |||
| 17 | |||
| 19 | |||
| 20 | |||
| 26 | |||
| 30 | |||
| * calculated from mass fraction data. | |||