Coulomb and Magnetic Dipole Coupling Dynamics; Positron-Electron Annihilation and Electron Pairing Configuration Model

Based on Coulomb interaction and magnetic dipole interaction, this paper establishes a configuration model for positron-electron coupling. Two geometric approaching modes (axial head-on and side-by-side) are distinguished, combined with the orientation of spin magnetic moments, to define eight coupling configurations. The model classifies different reaction channels, including two-photon annihilation, three-photon annihilation, long-lived bound states, stable pairing and transient unstable states, and discusses the relative reaction cross sections of each configuration. The spin arrow is only a schematic analogy for the magnetic dipole moment and does not represent physical mechanical rotation. This model is used to analyze the dynamical selection rules of positron-electron annihilation and electron pairing.