Configuration interaction calculation of elastic electronhyphen;atom scattering phase shifts: Application toehyphen;He scattering

摘要

The problem of electronhyphen;atom scattering is discussed using a Fredholm approach and a method developed for calculating the partialhyphen;wave Fredholm determinant using only square integrable basis functions and standard boundhyphen;state configuration interaction techniques. Problems arising due to wavefunction antisymmetry and use of inexact target states are discussed.Shyphen;wave elasticehyphen;He phase shifts are computed as an example of the method.