Atomic and nuclear properties of materials:
Zirconium (Zr)
QuantityValueUnits ValueUnits
Atomic number 40     
Atomic mass 91.224(2) g mole-1   
Density 6.51 g cm-3   
Mean excitation energy 393.0 eV   
Minimum ionization 1.349 MeV g-1cm2 8.777 MeV cm-1
Nuclear collision length 91.9 g cm-2 14.12 cm
Nuclear interaction length 153.4 g cm-2 23.58 cm
Pion collision length 116.6 g cm-2 17.92 cm
Pion interaction length 181.4 g cm-2 27.89 cm
Radiation length 10.20 g cm-2 1.567 cm
Critical energy 14.74 MeV (for e-) 14.27 MeV (for e+)
Molière radius 14.67 g cm-2 2.254 cm
Plasma energy 48.67 eV   
Muon critical energy 248. 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