Variational Calculations on Electron-Helium Scattering
Phys. Rev. A 6, 2118 – Published 1 December, 1972Erratum Phys. Rev. A 19, 1808 (1979)
DOI: https://doi.org/10.1103/PhysRevA.6.2118
Abstract
Calculations have been made on the elastic scattering of low-energy electrons by helium using a variational procedure which takes polarization and correlation effects into account by means of continuum Bethe-Goldstone equations. The convergence of the results is examined using two methods to obtain a complete set of basis functions. Results for the , , , and waves are presented. The width of the closed-channel resonance below the threshold is found to be 0.015 eV, in comparison with the 0.015-0.020-eV estimates of Andrick and Ehrhardt from experiment and the 0.01-eV estimate of Simpson and Fano.