Atomic and nuclear properties of materials:
Samarium (Sm)
QuantityValueUnits ValueUnits
Atomic number 62     
Atomic mass 150.36(2) g mole-1   
Density 7.46 g cm-3   
Mean excitation energy 574.0 eV   
Minimum ionization 1.210 MeV g-1cm2 9.029 MeV cm-1
Nuclear collision length 104.5 g cm-2 14.01 cm
Nuclear interaction length 179.8 g cm-2 24.10 cm
Pion collision length 128.4 g cm-2 17.21 cm
Pion interaction length 206.9 g cm-2 27.74 cm
Radiation length 7.57 g cm-2 1.015 cm
Critical energy 9.66 MeV (for e-) 9.33 MeV (for e+)
Molière radius 16.62 g cm-2 2.228 cm
Plasma energy 50.54 eV   
Muon critical energy 176. 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