Atomic and nuclear properties of materials:
Barium fluoride (BaF2)
QuantityValueUnits ValueUnits
<Z/A> 0.42207     
Density 4.89 g cm-3   
Mean excitation energy 375.9 eV   
Minimum ionization 1.303 MeV g-1cm2 6.374 MeV cm-1
Nuclear collision length 90.8 g cm-2 18.56 cm
Nuclear interaction length 149.0 g cm-2 30.46 cm
Pion collision length 116.4 g cm-2 23.78 cm
Pion interaction length 179.2 g cm-2 36.62 cm
Radiation length 9.91 g cm-2 2.026 cm
Critical energy 13.78 MeV (for e-) 13.34 MeV (for e+)
Molière radius 15.25 g cm-2 3.117 cm
Plasma energy 41.41 eV   
Muon critical energy 233. GeV   
Melting point 1641. K 1368. C
Boiling point @ 1 atm 2533. K 2260. C
Index of refraction (@ STP, Na D) 1.47     
Composition:
Elem ZAtomic frac* Mass frac*
F
9
2.00
0.216720
Ba
 56
1.00
0.783280
* 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