The angular dependence of electron scattering from the helium atom and the hydrogen molecule for small scattering angles in the 34 - 100 eV impact energy range is explained in terms of the first Born approximation and the polarized Born approximation. The theoretical results compare favorably with the experimental data for both elastic and inelastic scattering. New experimental and theoretical results are presented.
Bibliographical noteFunding Information:
for performing the calculation of the transition polarizability and providing us the results and to Dr. A. Kuppermann and Dr. W. WilLiams for important contributions to the experimental results. We are grateful to Dr. Lassettre for preprints of refs.  and 11031. Parts of this work were supported by the U. S. Atomic Energy Commis - sion (Report Code CALT-767P4-‘75; principal investigator, A. Kuppermannj, by NASA (Contract No. NAS-7-lClO), by USAF-SAMSO (Contract No. FO4701-70-C -0059), by Srutdia Laboratories, and by the University of Minnesota.