Atomic and nuclear properties of materials:
Bromine gas (Br2) (Br)
QuantityValueUnits ValueUnits
Atomic number 35     
Atomic mass 79.904(1) g mole-1   
Specific gravity (20° C, 1 atm) 7.07E-03 g cm-3   
Mean excitation energy 343.0 eV   
Minimum ionization 1.388 MeV g-1cm2 9.814E-03 MeV cm-1
Nuclear collision length 88.9 g cm-2 1.257E+04 cm
Nuclear interaction length 147.2 g cm-2 2.082E+04 cm
Pion collision length 113.8 g cm-2 1.609E+04 cm
Pion interaction length 175.5 g cm-2 2.482E+04 cm
Radiation length 11.42 g cm-2 1615. cm
Critical energy 19.16 MeV (for e-) 18.60 MeV (for e+)
Molière radius 12.64 g cm-2 1787. cm
Plasma energy 1.60 eV   
Muon critical energy 327. GeV   
Melting point 265.9 K -7.200 C
Boiling point @ 1 atm 331.9 K 58.78 C
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