Atomic and nuclear properties of nitrogen gas (N2)
QuantityValueUnits ValueUnits
Atomic number 7     
Atomic mass 14.007(2) g mole-1   
Specific gravity (20° C, 1 atm) 1.165E-03 g cm-3   
Mean excitation energy 82.0 eV   
Minimum ionization 1.825 MeV g-1cm2 2.127E-03 MeV cm-1
Nuclear collision length 61.1 g cm-2 5.242E+04 cm
Nuclear interaction length 89.7 g cm-2 7.696E+04 cm
Pion collision length 88.4 g cm-2 7.583E+04 cm
Pion interaction length 121.7 g cm-2 1.044E+05 cm
Radiation length 37.99 g cm-2 3.260E+04 cm
Critical energy 91.74 MeV (for e-) 89.71 MeV (for e+)
Molière radius 8.78 g cm-2 7536. cm
Plasma energy ωp 0.70 eV   
Muon critical energy 1154. GeV   
Melting point 63.15 K -210.0 C
Boiling point @ 1 atm 77.29 K -195.9 C
Index of refraction (0° C, 1 atm, Na D) 298. (n-1)x106     
For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PDF TEXT
Table of muon dE/dx and Range: PDF TEXT
Explanation of some entries
Table of isotopes Warning: may not be current
x ray mass attenuation coefficients