Atomic and nuclear properties of materials:
Carbon (amorphous) (C )

Quantity	Value	Units	Value	Units
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