Atomic and nuclear properties of cobalt (Co)
QuantityValueUnits ValueUnits
Atomic number 27     
Atomic mass 58.933194(4) g mol-1   
Density 8.900 g cm-3   
Mean excitation energy 297.0 eV   
Minimum ionization 1.419 MeV g-1cm2 12.63 MeV cm-1
Nuclear interaction length 134.2 g cm-2 15.08 cm
Nuclear collision length 82.7 g cm-2 9.291 cm
Pion interaction length 162.8 g cm-2 18.29 cm
Pion collision length 107.9 g cm-2 12.13 cm
Radiation length 13.62 g cm-2 1.530 cm
Critical energy 20.82 MeV (for e-) 20.16 MeV (for e+)
Muon critical energy 336. GeV   
Molière radius 13.87 g cm-2 1.558 cm
Plasma energy ωp 58.19 eV   
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
Table of isotopes via WIKIPEDIA
x ray mass attenuation coefficients from NIST