Atomic and nuclear properties of borosilicate glass (Pyrex Corning 7740)
QuantityValueUnits ValueUnits
<Z/A> 0.49707     
Specific gravity 2.230 g cm-3   
Mean excitation energy 134.0 eV   
Minimum ionization 1.696 MeV g-1cm2 3.781 MeV cm-1
Nuclear collision length 64.6 g cm-2 28.95 cm
Nuclear interaction length 96.5 g cm-2 43.29 cm
Pion collision length 91.3 g cm-2 40.96 cm
Pion interaction length 127.7 g cm-2 57.25 cm
Radiation length 28.17 g cm-2 12.63 cm
Critical energy 52.54 MeV (for e-) 51.07 MeV (for e+)
Molière radius 11.37 g cm-2 5.098 cm
Plasma energy ℏωp 30.34 eV   
Muon critical energy 731. GeV   
Composition:
Elem ZAtomic frac* Mass frac
B
5
1.00
0.040061
O
8
9.10
0.539564
Na
 11
0.33
0.028191
Al
 13
0.12
0.011644
Si
 14
3.62
0.377220
K
19
0.02
0.003321
* 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