Abstract
The total scattering cross section of molecular nitrogen for electrons in the energy range 0.3 to 1.6 eV has been measured absolutely by single-electron time-of-flight spectrometry, in which care has been taken to ensure positive removal of the scattered electrons and the gathering and reduction of data were in accordance with a thorough analysis of both statistical and systematic errors. The total cross section between 0.9 and 1.5 eV is found to be numerically equal to the momentum-transfer cross section of Englehardt, Phelps, and Risk; at lower energies it is appreciably lower than the momentum-transfer cross section. No evidence is found for the periodic structure reported in this cross section by Golden.
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