Atomic and nuclear properties of ferric oxide (Fe2O3)
QuantityValueUnits ValueUnits
<Z/A> 0.47592     
Specific gravity 5.200 g cm-3   
Mean excitation energy 227.3 eV   
Minimum ionization 1.525 MeV g-1cm2 7.930 MeV cm-1
Nuclear collision length 74.3 g cm-2 14.28 cm
Nuclear interaction length 115.9 g cm-2 22.29 cm
Pion collision length 100.6 g cm-2 19.36 cm
Pion interaction length 146.7 g cm-2 28.22 cm
Radiation length 16.86 g cm-2 3.242 cm
Critical energy 27.95 MeV (for e-) 27.10 MeV (for e+)
Molière radius 12.79 g cm-2 2.460 cm
Plasma energy ℏωp 45.33 eV   
Muon critical energy 429. GeV   
Composition:
Elem ZAtomic frac* Mass frac
O
8
3.00
0.300567
Fe
 26
2.00
0.699433
* calculated from mass fraction data

For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PDF TEXT
Table of muon dE/dx and Range: PDF TEXT
Explanation of some entries