Atomic and nuclear properties of materials:
Cellulose acetate butyrate (C₁₅H₂₂O₈)_n

Quantity	Value	Units	Value	Units
<Z/A>	0.53279
Density	1.20	g cm-3
Minimum ionization	1.904	MeV g-1cm2	2.285	MeV cm-1
Nuclear collision length	58.5	g cm-2	48.74	cm
Nuclear interaction length	83.7	g cm-2	69.77	cm
Pion collision length	85.9	g cm-2	71.59	cm
Pion interaction length	115.7	g cm-2	96.39	cm
Radiation length	39.75	g cm-2	33.13	cm
Critical energy	82.98	MeV (for e-)	80.77	MeV (for e+)
Molière radius	10.16	g cm-2	8.465	cm
Plasma energy	23.04	eV
Muon critical energy	1075.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
H	1	22.00	0.067125
C	6	15.00	0.545403
O	8	8.00	0.387472
* 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