Atomic and nuclear properties of materials:
Status of heaviest elements as of January 2013 (pdf)
Atomic number 115  
Atomic mass [288.192(6)] g mole-1
Density ?? g cm-3
Mean excitation energy 1199.0 eV
Minimum ionization 1.092 MeV g-1cm2
Nuclear collision length 125.2 g cm-2
Nuclear interaction length 222.8 g cm-2
Pion collision length 147.8 g cm-2
Pion interaction length 248.6 g cm-2
Radiation length 4.99 g cm-2
Critical energy 5.71 MeV (for e-)
Molière radius 18.55 g cm-2
Plasma energy 68.11 eV
Muon critical energy 111. 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
Note: One of the atomic masses reported by the JINR-LLNL group is given.
Note: Density 14.0 g/cm3 and Ieff = 1199 eV assumed in calculating critical energies and dE/dx.