Atomic and nuclear properties of materials:
Polyvinyl alcohol (C₂H3-O-H)_n

Quantity	Value	Units	Value	Units
<Z/A>	0.54480
Density	1.30	g cm-3
Mean excitation energy	69.7	eV
Minimum ionization	1.949	MeV g-1cm2	2.534	MeV cm-1
Nuclear collision length	57.9	g cm-2	44.54	cm
Nuclear interaction length	82.4	g cm-2	63.35	cm
Pion collision length	85.4	g cm-2	65.68	cm
Pion interaction length	114.3	g cm-2	87.92	cm
Radiation length	40.27	g cm-2	30.98	cm
Critical energy	85.74	MeV (for e-)	83.45	MeV (for e+)
Molière radius	9.96	g cm-2	7.662	cm
Plasma energy	24.25	eV
Muon critical energy	1108.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
H	1	4.00	0.091517
C	6	2.00	0.545298
O	8	1.00	0.363185
* 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