Atomic and nuclear properties of materials:
Hassium (Hs)

Quantity	Value	Units
Atomic number	108
Atomic mass	[269.13410000(1)]	g mole-1
Density	??	g cm-3
Mean excitation energy	1102.0	eV
Minimum ionization	1.110	MeV g-1cm2
Nuclear collision length	122.8	g cm-2
Nuclear interaction length	217.7	g cm-2
Pion collision length	145.5	g cm-2
Pion interaction length	243.7	g cm-2
Radiation length	5.17	g cm-2
Critical energy	6.01	MeV (for e-)
Molière radius	18.24	g cm-2
Plasma energy	68.30	eV
Muon critical energy	119.	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: Since there is no stable isotope, [atomic mass] is that of the longest-lived known isotope as of Jan 2007.
Note: Density 14.0 g/cm³ and I_eff = 1102 eV assumed in calculating critical energies and dE/dx.
Table of isotopes Warning: may not be current