Atomic and nuclear properties of materials:
Sodium iodide (NaI)
QuantityValueUnits ValueUnits
<Z/A> 0.42697     
Specific gravity 3.67 g cm-3   
Minimum ionization 1.305 MeV g-1cm2 4.785 MeV cm-1
Nuclear collision length 93.1 g cm-2 25.38 cm
Nuclear interaction length 154.6 g cm-2 42.16 cm
Radiation length 9.49 g cm-2 2.588 cm
Critical energy 13.37 MeV (for e-) 12.94 MeV (for e+)
Molière radius 15.05 g cm-2 4.105 cm
Plasma energy 36.06 eV   
Muon critical energy 228. GeV   
Melting point 933.2 K 660.0 C
Boiling point @ 1 atm 1577. K 1304. C
Index of refraction (@ STP, Na D) 1.77     
Composition:
Elem ZAtomic frac* Mass frac*
Na
 11
1.00
0.153373
I
53
1.00
0.846627
* 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