Atomic and nuclear properties of boron oxide (B2O3)
QuantityValueUnits ValueUnits
<Z/A> 0.49839     
Specific gravity 1.812 g cm-3   
Mean excitation energy 99.6 eV   
Minimum ionization 1.742 MeV g-1cm2 3.157 MeV cm-1
Nuclear collision length 60.3 g cm-2 33.25 cm
Nuclear interaction length 87.9 g cm-2 48.52 cm
Pion collision length 87.4 g cm-2 48.25 cm
Pion interaction length 119.9 g cm-2 66.14 cm
Radiation length 38.41 g cm-2 21.20 cm
Critical energy 73.67 MeV (for e-) 71.67 MeV (for e+)
Molière radius 11.06 g cm-2 6.102 cm
Plasma energy ℏωp 27.38 eV   
Muon critical energy 968. GeV   
Composition:
Elem ZAtomic frac* Mass frac
B
5
2.00
0.310551
O
8
3.00
0.689449
* 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