Atomic and nuclear properties of materials:
Carbon (amorphous) (C )
QuantityValueUnits ValueUnits
Atomic number 6     
Atomic mass 12.0107(8) g mole-1   
Density 2.00 g cm-3   
Mean excitation energy 78.0 eV   
Minimum ionization 1.749 MeV g-1cm2 3.497 MeV cm-1
Nuclear collision length 59.2 g cm-2 29.60 cm
Nuclear interaction length 85.8 g cm-2 42.90 cm
Pion collision length 86.5 g cm-2 43.23 cm
Pion interaction length 117.8 g cm-2 58.89 cm
Radiation length 42.70 g cm-2 21.35 cm
Critical energy 82.08 MeV (for e-) 79.85 MeV (for e+)
Molière radius 11.03 g cm-2 5.515 cm
Plasma energy 28.80 eV   
Muon critical energy 1060. GeV   
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
Explanation of some entries
Table of isotopes Warning: may not be current
x ray mass attenuation coefficients