Atomic and nuclear properties of materials:
Polyvinyl butyral [C₈H₁₃0₂]_n

Quantity	Value	Units	Value	Units
<Z/A>	0.54537
Density	1.12	g cm-3
Mean excitation energy	67.2	eV
Minimum ionization	1.962	MeV g-1cm2	2.198	MeV cm-1
Nuclear collision length	57.6	g cm-2	51.44	cm
Nuclear interaction length	81.8	g cm-2	73.01	cm
Pion collision length	85.1	g cm-2	75.98	cm
Pion interaction length	113.7	g cm-2	101.5	cm
Radiation length	41.61	g cm-2	37.15	cm
Critical energy	89.35	MeV (for e-)	86.98	MeV (for e+)
Molière radius	9.88	g cm-2	8.818	cm
Plasma energy	22.52	eV
Muon critical energy	1146.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
H	1	13.00	0.092802
C	6	8.00	0.680561
O	8	2.00	0.226637
* 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