Measurements are reported on the ratio of forward to back scattering of electrons in the energy range 3-20 eV by He, O, Ar, H₂, N₂, and O₂ using the modulated crossed-beam technique. It is found that atomic oxygen has strong forward scattering at the lower energies. Agreement is found between the present results for He, Ar, H₂, and N₂ and ratios calculated from previously published differential-cross-section measurements except for H₂ and N₂ at the lower-energy limit.
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Dehmel et al. (1974) studied this question.
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