Atomic and nuclear properties of materials:
Aluminum (Al)

Quantity	Value	Units	Value	Units
Atomic number	13
Atomic mass	26.9815386(8)	g mole-1
Density	2.70	g cm-3
Mean excitation energy	166.0	eV
Minimum ionization	1.615	MeV g-1cm2	4.358	MeV cm-1
Nuclear collision length	69.7	g cm-2	25.82	cm
Nuclear interaction length	107.2	g cm-2	39.70	cm
Pion collision length	95.6	g cm-2	35.41	cm
Pion interaction length	136.7	g cm-2	50.64	cm
Radiation length	24.01	g cm-2	8.897	cm
Critical energy	42.70	MeV (for e-)	41.48	MeV (for e+)
Molière radius	11.93	g cm-2	4.419	cm
Plasma energy	32.86	eV
Muon critical energy	612.	GeV
Melting point	933.5	K	660.3	C
Boiling point @ 1 atm	2792.	K	2519.	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