Atomic and nuclear properties of materials:
MS20 tissue substitute
QuantityValueUnits ValueUnits
<Z/A> 0.53886     
Density 1.00 g cm-3   
Mean excitation energy 75.1 eV   
Minimum ionization 1.934 MeV g-1cm2 1.934 MeV cm-1
Nuclear collision length 58.8 g cm-2 58.81 cm
Nuclear interaction length 84.1 g cm-2 84.14 cm
Pion collision length 86.2 g cm-2 86.20 cm
Pion interaction length 116.0 g cm-2 116.0 cm
Radiation length 38.29 g cm-2 38.29 cm
Critical energy 81.30 MeV (for e-) 79.15 MeV (for e+)
Molière radius 9.99 g cm-2 9.987 cm
Plasma energy 21.15 eV   
Muon critical energy 1057. GeV   
Composition:
Elem ZAtomic frac* Mass frac*
H
1
1.00
0.081192
C
6
0.60
0.583442
N
7
0.02
0.017798
O
8
0.14
0.186381
Mg
 12
0.07
0.130287
Cl
 17
0.00
0.000900
* 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