Atomic and nuclear properties of materials:
Polytetrafluoroethylene (Teflon, [CF₂CF₂]_n)

Quantity	Value	Units	Value	Units
<Z/A>	0.47992
Specific gravity	2.20	g cm-3
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
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	29.61	eV
Muon critical energy	854.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
C	6	1.00	0.240183
F	9	2.00	0.759817
* 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