Atomic and nuclear properties of samarium (Sm)
QuantityValueUnits ValueUnits
Atomic number 62     
Atomic mass 150.36(2) g mole-1   
Specific gravity 7.520 g cm-3   
Mean excitation energy 574.0 eV   
Minimum ionization 1.210 MeV g-1cm2 9.101 MeV cm-1
Nuclear collision length 104.5 g cm-2 13.90 cm
Nuclear interaction length 179.8 g cm-2 23.91 cm
Pion collision length 128.4 g cm-2 17.08 cm
Pion interaction length 206.9 g cm-2 27.52 cm
Radiation length 7.57 g cm-2 1.007 cm
Critical energy 9.66 MeV (for e-) 9.32 MeV (for e+)
Molière radius 16.63 g cm-2 2.211 cm
Plasma energy ωp 50.74 eV   
Muon critical energy 176. 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