Atomic and nuclear properties of acetylene (CHCH)
QuantityValueUnits ValueUnits
<Z/A> 0.53768     
Specific gravity (20° C, 1 atm) 1.097E-03 g cm-3   
Mean excitation energy 58.2 eV   
Minimum ionization 2.025 MeV g-1cm2 2.221E-03 MeV cm-1
Nuclear collision length 57.5 g cm-2 5.243E+04 cm
Nuclear interaction length 81.7 g cm-2 7.450E+04 cm
Pion collision length 85.0 g cm-2 7.747E+04 cm
Pion interaction length 113.7 g cm-2 1.037E+05 cm
Radiation length 43.79 g cm-2 3.993E+04 cm
Critical energy 116.34 MeV (for e-) 113.85 MeV (for e+)
Molière radius 7.98 g cm-2 7278. cm
Plasma energy ℏωp 0.70 eV   
Muon critical energy 1400. GeV   
Composition:
Elem ZAtomic frac* Mass frac
H
1
2.00
0.077418
C
6
2.00
0.922582
* 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