Atomic and nuclear properties of materials:
Bromine gas (Br₂) (Br)

Quantity	Value	Units	Value	Units
Atomic number	35
Atomic mass	79.904(1)	g mole-1
Specific gravity (20° C, 1 atm)	7.07E-03	g cm-3
Minimum ionization	1.388	MeV g-1cm2	9.814E-03	MeV cm-1
Nuclear collision length	88.9	g cm-2	1.257E+04	cm
Nuclear interaction length	147.2	g cm-2	2.082E+04	cm
Radiation length	11.42	g cm-2	1615.	cm
Critical energy	19.16	MeV (for e-)	18.60	MeV (for e+)
Molière radius	12.64	g cm-2	1787.	cm
Plasma energy	1.60	eV
Muon critical energy	327.	GeV
Melting point	265.9	K	-7.200	C
Boiling point @ 1 atm	331.9	K	58.78	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
x ray mass attenuation coefficients