Atomic and nuclear properties of polytetrafluoroethylene (Teflon, [(CF2CF2)n])
QuantityValueUnits ValueUnits
<Z/A> 0.47992     
Specific gravity 2.200 g cm-3   
Mean excitation energy 99.1 eV   
Minimum ionization 1.671 MeV g-1cm2 3.677 MeV cm-1
Nuclear collision length 63.5 g cm-2 28.85 cm
Nuclear interaction length 94.4 g cm-2 42.89 cm
Pion collision length 89.9 g cm-2 40.86 cm
Pion interaction length 124.8 g cm-2 56.74 cm
Radiation length 34.84 g cm-2 15.84 cm
Critical energy 63.50 MeV (for e-) 61.75 MeV (for e+)
Molière radius 11.64 g cm-2 5.289 cm
Plasma energy ℏωp 29.61 eV   
Muon critical energy 854. GeV   
Composition:
Elem ZAtomic frac* Mass frac
C
6
1.00
0.240183
F
9
2.00
0.759817
* 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