Atomic and nuclear properties of germanium (Ge)
QuantityValueUnits ValueUnits
Atomic number 32     
Atomic mass 72.630(1) g mol-1   
Density 5.323 g cm-3   
Mean excitation energy 350.0 eV   
Minimum ionization 1.370 MeV g-1cm2 7.292 MeV cm-1
Nuclear interaction length 143.0 g cm-2 26.86 cm
Nuclear collision length 86.9 g cm-2 16.32 cm
Pion interaction length 171.2 g cm-2 32.17 cm
Pion collision length 111.9 g cm-2 21.02 cm
Radiation length 12.25 g cm-2 2.302 cm
Critical energy 18.16 MeV (for e-) 17.58 MeV (for e+)
Muon critical energy 298. GeV   
Molière radius 14.31 g cm-2 2.688 cm
Plasma energy ωp 44.13 eV   
Melting point 1211. K 938.2 C
Boiling point @ 1 atm 3106. K 2833. C
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