Atomic and nuclear properties of materials:
Liquid fluorine (F₂) (F )

Quantity	Value	Units	Value	Units
Atomic number	9
Atomic mass	18.9984032(5)	g mole-1
Density	1.51	g cm-3
Mean excitation energy	115.0	eV
Minimum ionization	1.634	MeV g-1cm2	2.462	MeV cm-1
Nuclear collision length	65.0	g cm-2	43.10	cm
Nuclear interaction length	97.4	g cm-2	64.64	cm
Pion collision length	91.0	g cm-2	60.40	cm
Pion interaction length	127.2	g cm-2	84.43	cm
Radiation length	32.93	g cm-2	21.85	cm
Critical energy	59.81	MeV (for e-)	58.17	MeV (for e+)
Molière radius	11.68	g cm-2	7.748	cm
Plasma energy	24.35	eV
Muon critical energy	811.	GeV
Melting point	53.53	K	-219.6	C
Boiling point @ 1 atm	85.03	K	-188.1	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