Complex-Energy Method for Elastic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>e</mml:mi></mml:math>-H Scattering above the Ionization Threshold

Abstract

It is demonstrated that the amplitude for elastic electron-hydrogen atom scattering above ionization threshold can be calculated by using a variational method at several complex energies and continuing into the physical region numerically.