Electron Spin

Abstract

In Section IX.2 the doublet fine-structure splitting of one-electron atoms is explained as a spin effect. To obtain quantitative results the interaction Hamiltonian for the spin interaction is determined in Section IX.3. In Section IX.3a the magnetic moment of the electron is determined by classical arguments; in Section IX.3b the magnetic field, which acts on the electron magnetic moment in an atom, is presented. In Section IX.4 these results are used to calculate the fine-structure splitting. In Section IX.5 selection rules for dipole transitions are derived, and the chapter closes with some general remarks concerning the visualization of quantum systems.