Simple Model for Collision Effects in Photoemission

Abstract

We treat the problem of energy loss to phonons in photoemission by making a one-dimensional approximation. We include pair creation and finite electron reflectivity at the surface. It is assumed that after pair creation neither primary nor secondary electrons can escape. Phonon scattering, pair creation, and reflectivity are assumed independent of electron energy, although this will often be a poor approximation. With the above approximations the problem is exactly soluble. For large phonon energy losses the results are similar to the predictions of age theory.