Atomic and nuclear properties of lutetium (Lu)
QuantityValueUnits ValueUnits
Atomic number 71     
Atomic mass 174.9668(1) g mole-1   
Specific gravity 9.841 g cm-3   
Mean excitation energy 694.0 eV   
Minimum ionization 1.160 MeV g-1cm2 11.42 MeV cm-1
Nuclear collision length 108.9 g cm-2 11.06 cm
Nuclear interaction length 188.9 g cm-2 19.19 cm
Pion collision length 132.5 g cm-2 13.46 cm
Pion interaction length 215.7 g cm-2 21.92 cm
Radiation length 6.92 g cm-2 0.7036 cm
Critical energy 8.36 MeV (for e-) 8.06 MeV (for e+)
Molière radius 17.55 g cm-2 1.784 cm
Plasma energy ωp 57.58 eV   
Muon critical energy 157. GeV   
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