The middle ultraviolet-visible spectrum of H2 excited by electron impact
G.K. James, J.M. Ajello and W.R. Pryor
The electron-impact-excited emission spectrum of H2 has been measured in
the wavelength region 175-530 nm
at a spectral resolution of 1.7 nm (FWHM).  The laboratory spectra are
characterized by underlying 
H2 (a-b) continuum emission, together with many strong lines assigned to
the gerade singlet states 
of H2, and to members of the H Balmer series from dissociative excitation
of H2.