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

Quantity	Value	Units	Value	Units
Atomic number	6
Atomic mass	[12.0107(8)]	g mole-1
Density	2.27	g cm-3
Minimum ionization	1.745	MeV g-1cm2	3.952	MeV cm-1
Nuclear collision length	59.2	g cm-2	26.14	cm
Nuclear interaction length	85.8	g cm-2	37.89	cm
Pion collision length	86.5	g cm-2	38.17	cm
Pion interaction length	117.8	g cm-2	52.00	cm
Radiation length	42.70	g cm-2	18.85	cm
Critical energy	81.67	MeV (for e-)	79.44	MeV (for e+)
Molière radius	11.09	g cm-2	4.894	cm
Plasma energy	30.65	eV
Muon critical energy	1057.	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