Atomic and nuclear properties of materials:
Platinum (Pt)

Quantity	Value	Units	Value	Units
Atomic number	78
Atomic mass	195.084(9)	g mole-1
Density	21.5	g cm-3
Mean excitation energy	790.0	eV
Minimum ionization	1.128	MeV g-1cm2	24.21	MeV cm-1
Nuclear collision length	112.2	g cm-2	5.230	cm
Nuclear interaction length	195.7	g cm-2	9.125	cm
Pion collision length	135.6	g cm-2	6.320	cm
Pion interaction length	222.4	g cm-2	10.37	cm
Radiation length	6.54	g cm-2	0.3051	cm
Critical energy	7.59	MeV (for e-)	7.31	MeV (for e+)
Molière radius	18.29	g cm-2	0.8527	cm
Plasma energy	84.39	eV
Muon critical energy	144.	GeV
Melting point	2042.	K	1768.	C
Boiling point @ 1 atm	4098.	K	3825.	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