Atomic and nuclear properties of materials:
Liquid nitrogen (N2) (N )
QuantityValueUnits ValueUnits
Atomic number 7     
Atomic mass 14.0067(2) g mole-1   
Density 0.807 g cm-3   
Mean excitation energy 82.0 eV   
Minimum ionization 1.813 MeV g-1cm2 1.463 MeV cm-1
Nuclear collision length 61.1 g cm-2 75.70 cm
Nuclear interaction length 89.7 g cm-2 111.1 cm
Pion collision length 88.4 g cm-2 109.5 cm
Pion interaction length 121.7 g cm-2 150.8 cm
Radiation length 37.99 g cm-2 47.07 cm
Critical energy 75.47 MeV (for e-) 73.49 MeV (for e+)
Molière radius 10.67 g cm-2 13.23 cm
Plasma energy 18.30 eV   
Muon critical energy 982. GeV   
Melting point 63.15 K -210.0 C
Boiling point @ 1 atm 77.29 K -195.9 C
Index of refraction (@ STP, Na D) 1.20     
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
Note: Index of refraction at boiling point, 1 atm.
Table of isotopes Warning: may not be current
x ray mass attenuation coefficients