Atomic and nuclear properties of materials:
Gallium (Ga)
QuantityValueUnits ValueUnits
Atomic number 31     
Atomic mass 69.723(1) g mole-1   
Density 5.90 g cm-3   
Mean excitation energy 334.0 eV   
Minimum ionization 1.379 MeV g-1cm2 8.140 MeV cm-1
Nuclear collision length 86.0 g cm-2 14.57 cm
Nuclear interaction length 141.2 g cm-2 23.92 cm
Pion collision length 111.1 g cm-2 18.82 cm
Pion interaction length 169.7 g cm-2 28.74 cm
Radiation length 12.47 g cm-2 2.113 cm
Critical energy 18.57 MeV (for e-) 17.98 MeV (for e+)
Molière radius 14.24 g cm-2 2.412 cm
Plasma energy 46.69 eV   
Muon critical energy 304. 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