Struthers, H.2013-06-102013-06-101998http://hdl.handle.net/10092/7816http://dx.doi.org/10.26021/8411Theoretical studies of electron-atom and electron-molecule scattering are reported. Second Born scattering amplitudes for the scattering of electrons from helium have been calculated, with the matrix elements of the two particle Green's function being estimated using the closure approximation. Electron-molecular hydrogen amplitudes have also been calculated using a numerical quadrature scheme. A multichannel method of applying Schwinger's variational theory, which utilises the closure approximation to estimate the second Born like terms required, is introduced and a discussion of possible future work in this area is given.enCopyright H. StruthersTheses / Dissertations