Atomic and nuclear properties of materials:
Mercury (Hg)

Quantity	Value	Units	Value	Units
Atomic number	80
Atomic mass	200.59(2)	g mole-1
Density	13.5	g cm-3
Minimum ionization	1.130	MeV g-1cm2	15.31	MeV cm-1
Nuclear collision length	113.1	g cm-2	8.346	cm
Nuclear interaction length	197.5	g cm-2	14.58	cm
Pion collision length	136.4	g cm-2	10.07	cm
Pion interaction length	224.1	g cm-2	16.54	cm
Radiation length	6.44	g cm-2	0.4752	cm
Critical energy	7.53	MeV (for e-)	7.26	MeV (for e+)
Molière radius	18.12	g cm-2	1.338	cm
Plasma energy	66.98	eV
Muon critical energy	143.	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