Hi all, I'm keen to find out more about electron ejection from metals. Eg multi-photon photoelectric effect and thermionic emission. I've come across a few texts (Kittel) which deal with them in a general sense but can anyone recommend a more detailed analysis? Some questions which I hope to resolve are as follows; What determines the angular distribution of the emitted electrons? What kind of velocities are associated with the electrons? (I understand their kinetic energy depends on the extra amount of energy they have after using up their energy to escape the metal) How does it differ with different materials, i.e. I know the work function of a metal determines the energy required for an electron to overcome the vacuum potential, but is this all that matters? Do metals with a different conductivity, but the same work function behave differently under the same emission conditions?