| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.48710 | |||
| Specific gravity | 1.46 | g cm-3 | ||
| Minimum ionization | 1.656 | MeV g-1cm2 | 2.417 | MeV cm-1 |
| Nuclear collision length | 70.2 | g cm-2 | 48.11 | cm |
| Nuclear interaction length | 107.8 | g cm-2 | 73.85 | cm |
| Radiation length | 21.55 | g cm-2 | 14.76 | cm |
| Critical energy | 39.45 | MeV (for e-) | 38.35 | MeV (for e+) |
| Molière radius | 11.58 | g cm-2 | 7.935 | cm |
Plasma energy ![]() |
24.30 | eV | ||
| Muon critical energy | 569. | GeV |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 6 | |||
| 17 | |||
| * calculated from mass fraction data. | |||