1" 1. Foreword.-First experiments on electron interaction with gases started soon after the
discovery of this elementary particle. One hundred years ago, Lenard (1894, 1895, 1903) …

We present a review of the recent electron-helium calculations and experiments
concentrating on the extensive application of the convergent close-coupling (CCC) method …

We present the convergent close-coupling theory for the calculation of electron-helium
scattering. We demonstrate its applicability at a range of projectile energies of 1.5 to 500 eV …

The authors report new differential cross section measurements (E 0= 1.5-50 eV) and
coupled channel optical model calculations for elastic scattering of electrons from helium …

The electron-atom system allows us to study many-fennion dynamics with a simple two-body
potential. Calculations are tested by detailed, experiments with a high degree of state …

Elastic, inelastic, and superelastic scattering of electrons by an electron-impact ionization of
excited atoms are reviewed and discussed and the role of the electric dipole polarizability in …

New experimental electron-energy-loss data have been used to extract differential and
integral cross sections for excitation of the 2 1 P level, and for the overlapping (3 1 P, 3 1 D …

Differential and integral electron impact excitation cross sections are reported for the n 3 S, n
1 S and n 3 P (n= 2, 3) levels in He. Differential cross sections were measured at 30, 50 and …

We present a combined experimental and theoretical study of ionization of the ground state
of helium by 40 eV incident electrons. Absolute in-plane and out-of-plane measurements are …

A coupled-channel optical method for electron–atomic-hydrogen scattering is presented in a
form that treats both the projectile and the target electrons symmetrically. Elastic differential …