Differential elastic electron scattering cross sections for ethane in the energy range from 2 to 100 eV

Cross sections for vibrationally elastic scattering of the system e-C 2 H 6 have been measured with a newly constructed apparatus of the crossed-beam type using the relative flow technique. Absolute elastic differential cross sections for C 2 H 6 were obtained by measuring the ratios to the cross section for He at impact energies of 2, 3, 4, 5, 6, 7.5, 8.5, 10, 15, 20, 40 and 100 eV and angles from 15' to 130'. Integral and momentum transfer cross sections were calculated from the DCS and are compared with other measurements. A short description of the apparatus is given.