Quantity | Value | Units | Value | Units |
Atomic number | 21 | |||
Atomic mass | 44.955908(5) | g mole-1 | ||
Specific gravity | 2.989 | g cm-3 | ||
Mean excitation energy | 216.0 | eV | ||
Minimum ionization | 1.522 | MeV g-1cm2 | 4.550 | MeV cm-1 |
Nuclear collision length | 77.7 | g cm-2 | 26.01 | cm |
Nuclear interaction length | 123.9 | g cm-2 | 41.45 | cm |
Pion collision length | 103.3 | g cm-2 | 34.55 | cm |
Pion interaction length | 152.9 | g cm-2 | 51.16 | cm |
Radiation length | 16.55 | g cm-2 | 5.535 | cm |
Critical energy | 27.61 | MeV (for e-) | 26.79 | MeV (for e+) |
Molière radius | 12.71 | g cm-2 | 4.252 | cm |
Plasma energy ℏωp | 34.05 | eV | ||
Muon critical energy | 422. | GeV |