Atomic and nuclear properties of materials:
Silicon dioxide (fused quartz) (SiO2)
QuantityValueUnits ValueUnits
<Z/A> 0.49930     
Density 2.20 g cm-3   
Mean excitation energy 139.2 eV   
Minimum ionization 1.699 MeV g-1cm2 3.737 MeV cm-1
Nuclear collision length 65.2 g cm-2 29.64 cm
Nuclear interaction length 97.8 g cm-2 44.47 cm
Pion collision length 91.9 g cm-2 41.77 cm
Pion interaction length 128.8 g cm-2 58.56 cm
Radiation length 27.05 g cm-2 12.29 cm
Critical energy 50.58 MeV (for e-) 49.17 MeV (for e+)
Molière radius 11.34 g cm-2 5.154 cm
Plasma energy 30.20 eV   
Muon critical energy 708. GeV   
Melting point 1986. K 1713. C
Boiling point @ 1 atm 3223. K 2950. C
Index of refraction (@ STP, Na D) 1.46     
Composition:
Elem ZAtomic frac* Mass frac*
O
8
2.00
0.532565
Si
 14
1.00
0.467435
* 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