Atomic and nuclear properties of materials:
Polyoxymethylene (CH2O)n
QuantityValueUnits ValueUnits
<Z/A> 0.53287     
Density 1.42 g cm-3   
Mean excitation energy 77.4 eV   
Minimum ionization 1.894 MeV g-1cm2 2.698 MeV cm-1
Nuclear collision length 58.8 g cm-2 41.25 cm
Nuclear interaction length 84.3 g cm-2 59.16 cm
Pion collision length 86.2 g cm-2 60.48 cm
Pion interaction length 116.2 g cm-2 81.57 cm
Radiation length 38.47 g cm-2 26.99 cm
Critical energy 79.63 MeV (for e-) 77.49 MeV (for e+)
Molière radius 10.24 g cm-2 7.188 cm
Plasma energy 25.11 eV   
Muon critical energy 1040. GeV   
Composition:
Elem ZAtomic frac* Mass frac*
H
1
2.00
0.067135
C
6
1.00
0.400017
O
8
1.00
0.532848
* 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