Atomic and nuclear properties of materials:
Lanthanum oxysulfide La₂O₂S

Quantity	Value	Units	Value	Units
<Z/A>	0.42706
Specific gravity	5.86	g cm-3
Minimum ionization	1.301	MeV g-1cm2	7.624	MeV cm-1
Nuclear collision length	92.9	g cm-2	15.85	cm
Nuclear interaction length	153.6	g cm-2	26.22	cm
Radiation length	9.31	g cm-2	1.589	cm
Critical energy	12.90	MeV (for e-)	12.48	MeV (for e+)
Molière radius	15.30	g cm-2	2.612	cm
Plasma energy	45.59	eV
Muon critical energy	221.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
O	8	2.00	0.093600
S	16	1.00	0.093778
La	57	2.00	0.812622
* 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