Atomic and nuclear properties of materials:
Cellulose acetate (C₆H₇O₂(OCOCH₃)₃)_n

Quantity	Value	Units	Value	Units
<Z/A>	0.53040
Density	1.42	g cm-3
Minimum ionization	1.885	MeV g-1cm2	2.676	MeV cm-1
Nuclear collision length	58.8	g cm-2	41.42	cm
Nuclear interaction length	84.4	g cm-2	59.45	cm
Pion collision length	86.2	g cm-2	60.71	cm
Pion interaction length	116.3	g cm-2	81.94	cm
Radiation length	38.75	g cm-2	27.29	cm
Critical energy	79.89	MeV (for e-)	77.74	MeV (for e+)
Molière radius	10.29	g cm-2	7.244	cm
Plasma energy	25.01	eV
Muon critical energy	1042.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
H	1	10.00	0.062162
C	6	6.00	0.444462
O	8	5.00	0.493376
* 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