Atomic and nuclear properties of C-552 air-equivalent plastic
QuantityValueUnits ValueUnits
<Z/A> 0.49969     
Specific gravity 1.760 g cm-3   
Mean excitation energy 86.8 eV   
Minimum ionization 1.760 MeV g-1cm2 3.097 MeV cm-1
Nuclear collision length 61.2 g cm-2 34.77 cm
Nuclear interaction length 89.4 g cm-2 50.81 cm
Pion collision length 88.1 g cm-2 50.04 cm
Pion interaction length 120.7 g cm-2 68.55 cm
Radiation length 37.62 g cm-2 21.38 cm
Critical energy 72.32 MeV (for e-) 70.35 MeV (for e+)
Molière radius 11.03 g cm-2 6.268 cm
Plasma energy ℏωp 27.02 eV   
Muon critical energy 954. GeV   
Composition:
Elem ZAtomic frac* Mass frac
H
1
1.00
0.024680
C
6
1.71
0.501610
O
8
0.01
0.004527
F
9
1.00
0.465209
Si
 14
0.01
0.003973
* 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