Atomic and nuclear properties of materials:
Rhenium (Re)

Quantity	Value	Units	Value	Units
Atomic number	75
Atomic mass	186.207(1)	g mole-1
Density	21.0	g cm-3
Minimum ionization	1.143	MeV g-1cm2	24.02	MeV cm-1
Nuclear collision length	110.8	g cm-2	5.269	cm
Nuclear interaction length	192.8	g cm-2	9.170	cm
Pion collision length	134.2	g cm-2	6.386	cm
Pion interaction length	219.5	g cm-2	10.44	cm
Radiation length	6.69	g cm-2	0.3183	cm
Critical energy	7.85	MeV (for e-)	7.57	MeV (for e+)
Molière radius	18.06	g cm-2	0.8594	cm
Plasma energy	83.85	eV
Muon critical energy	148.	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