Atomic and nuclear properties of materials:
Strontium (Sr)
QuantityValueUnits ValueUnits
Atomic number 38     
Atomic mass 87.62(1) g mole-1   
Density 2.54 g cm-3   
Mean excitation energy 366.0 eV   
Minimum ionization 1.353 MeV g-1cm2 3.437 MeV cm-1
Nuclear collision length 91.0 g cm-2 35.81 cm
Nuclear interaction length 151.5 g cm-2 59.65 cm
Pion collision length 115.7 g cm-2 45.55 cm
Pion interaction length 179.6 g cm-2 70.72 cm
Radiation length 10.76 g cm-2 4.237 cm
Critical energy 15.97 MeV (for e-) 15.47 MeV (for e+)
Molière radius 14.29 g cm-2 5.626 cm
Plasma energy 30.24 eV   
Muon critical energy 265. 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