Atomic and nuclear properties of materials:
Potassium iodide (KI)
QuantityValueUnits ValueUnits
<Z/A> 0.43373     
Specific gravity 3.13 g cm-3   
Minimum ionization 1.332 MeV g-1cm2 4.168 MeV cm-1
Nuclear collision length 92.8 g cm-2 29.66 cm
Nuclear interaction length 154.6 g cm-2 49.38 cm
Radiation length 9.64 g cm-2 3.079 cm
Critical energy 13.92 MeV (for e-) 13.47 MeV (for e+)
Molière radius 14.68 g cm-2 4.691 cm
Plasma energy 33.57 eV   
Muon critical energy 236. GeV   
Composition:
Elem ZAtomic frac* Mass frac*
K
19
1.00
0.235528
I
53
1.00
0.764472
* 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