Atomic and nuclear properties of materials:
Chromium (Cr)
QuantityValueUnits ValueUnits
Atomic number 24     
Atomic mass 51.9961(6) g mole-1   
Density 7.18 g cm-3   
Mean excitation energy 257.0 eV   
Minimum ionization 1.456 MeV g-1cm2 10.46 MeV cm-1
Nuclear collision length 80.3 g cm-2 11.19 cm
Nuclear interaction length 129.3 g cm-2 18.01 cm
Pion collision length 105.7 g cm-2 14.72 cm
Pion interaction length 158.2 g cm-2 22.03 cm
Radiation length 14.94 g cm-2 2.081 cm
Critical energy 23.52 MeV (for e-) 22.79 MeV (for e+)
Molière radius 13.47 g cm-2 1.877 cm
Plasma energy 52.46 eV   
Muon critical energy 371. 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