Atomic and nuclear properties of materials:
Boron carbide (B4C)
QuantityValueUnits ValueUnits
<Z/A> 0.47059     
Density 2.52 g cm-3   
Mean excitation energy 84.7 eV   
Minimum ionization 1.650 MeV g-1cm2 4.157 MeV cm-1
Nuclear collision length 58.3 g cm-2 23.12 cm
Nuclear interaction length 83.9 g cm-2 33.27 cm
Pion collision length 85.5 g cm-2 33.93 cm
Pion interaction length 116.0 g cm-2 46.04 cm
Radiation length 50.14 g cm-2 19.90 cm
Critical energy 90.55 MeV (for e-) 88.09 MeV (for e+)
Molière radius 11.74 g cm-2 4.659 cm
Plasma energy 31.38 eV   
Muon critical energy 1139. GeV   
Composition:
Elem ZAtomic frac* Mass frac*
B
5
4.00
0.782610
C
6
1.00
0.217390
* calculated from mass fraction data.

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