Atomic and nuclear properties of materials:
Terbium (Tb)
QuantityValueUnits ValueUnits
Atomic number 65     
Atomic mass 158.92535(2) g mole-1   
Density 8.23 g cm-3   
Mean excitation energy 614.0 eV   
Minimum ionization 1.188 MeV g-1cm2 9.777 MeV cm-1
Nuclear collision length 106.1 g cm-2 12.89 cm
Nuclear interaction length 183.0 g cm-2 22.24 cm
Pion collision length 129.9 g cm-2 15.78 cm
Pion interaction length 210.1 g cm-2 25.53 cm
Radiation length 7.36 g cm-2 0.8940 cm
Critical energy 9.17 MeV (for e-) 8.85 MeV (for e+)
Molière radius 17.00 g cm-2 2.066 cm
Plasma energy 52.87 eV   
Muon critical energy 169. 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