[en] The profile of emission spectra of Balmer-α radiation by electron impact on H₂ has been investigated by using an etalon-grating monochromator with high resolution (<0.1 A). Spectra obtained in this experiment show an anomalous Doppler profile, which indicates that H*(3) resulting from the process, H₂ + e→H*(3) + H(n) + e, has two kinds of average kinetic energies; approximately 0.3 eV and approximately 7 eV. The angular and/or kinetic-energy distribution of H*(3), on which a spectral profile of Balmer-α radiation depends, is discussed in connection with the potential energy curve of the highly-excited states of the H₂ molecule. (Auth.)