Atomic and nuclear properties of paraffin (CH3(CH2)n\approx23CH3)
QuantityValueUnits ValueUnits
<Z/A> 0.57275     
Specific gravity 0.9300 g cm-3   
Mean excitation energy 55.9 eV   
Minimum ionization 2.088 MeV g-1cm2 1.942 MeV cm-1
Nuclear collision length 56.0 g cm-2 60.24 cm
Nuclear interaction length 78.3 g cm-2 84.14 cm
Pion collision length 83.6 g cm-2 89.92 cm
Pion interaction length 110.1 g cm-2 118.4 cm
Radiation length 44.85 g cm-2 48.22 cm
Critical energy 102.22 MeV (for e-) 99.54 MeV (for e+)
Molière radius 9.30 g cm-2 10.00 cm
Plasma energy ωp 21.03 eV   
Muon critical energy 1288. GeV   
Composition:
Elem ZAtomic frac* Mass frac
H
1
52.00
0.148605
C
6
25.00
0.851395
* 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