Atomic and nuclear properties of potassium iodide (KI)
QuantityValueUnits ValueUnits
<Z/A> 0.43373     
Specific gravity 3.130 g cm-3   
Mean excitation energy 431.9 eV   
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
Pion collision length 117.8 g cm-2 37.63 cm
Pion interaction length 183.3 g cm-2 58.55 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 ℏωp 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

For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PDF TEXT
Table of muon dE/dx and Range: PDF TEXT
Explanation of some entries