| Quantity | Value | Units | Value | Units | 
| <Z/A> | 0.42266 | |||
| Density | 7.44 | g cm-3 | ||
| Mean excitation energy | 493.3 | eV | ||
| Minimum ionization | 1.257 | MeV g-1cm2 | 9.352 | MeV cm-1 | 
| Nuclear collision length | 96.1 | g cm-2 | 12.92 | cm | 
| Nuclear interaction length | 160.1 | g cm-2 | 21.52 | cm | 
| Pion collision length | 121.5 | g cm-2 | 16.33 | cm | 
| Pion interaction length | 190.2 | g cm-2 | 25.57 | cm | 
| Radiation length | 8.49 | g cm-2 | 1.141 | cm | 
| Critical energy | 11.27 | MeV (for e-) | 10.89 | MeV (for e+) | 
| Molière radius | 15.96 | g cm-2 | 2.146 | cm | 
 Plasma energy  ![]()  | 
51.10 | eV | ||
| Muon critical energy | 199. | GeV | 
| Elem | Z | Atomic frac* | Mass frac* | 
| 8 | |||
| 16 | |||
| 64 | |||
| * calculated from mass fraction data. | |||