Atomic and nuclear properties of ytterbium (Yb)
QuantityValueUnits ValueUnits
Atomic number 70     
Atomic mass 173.054(5) g mole-1   
Specific gravity 6.903 g cm-3   
Mean excitation energy 684.0 eV   
Minimum ionization 1.159 MeV g-1cm2 8.001 MeV cm-1
Nuclear collision length 108.6 g cm-2 15.73 cm
Nuclear interaction length 188.2 g cm-2 27.26 cm
Pion collision length 132.2 g cm-2 19.15 cm
Pion interaction length 215.1 g cm-2 31.16 cm
Radiation length 7.02 g cm-2 1.017 cm
Critical energy 8.52 MeV (for e-) 8.22 MeV (for e+)
Molière radius 17.47 g cm-2 2.531 cm
Plasma energy ωp 48.15 eV   
Muon critical energy 161. 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